| __Name__ | __Size__ | __Date__ | __Rating__ | __Description__ |

| **(Parent Dir)** | *folder* | | **Up to TI-83/84 Plus BASIC Math Programs** |

| **trigintp.zip** | 1k | 19-08-05 | | **TRIGINTRP** This program will compute a trigonometric interpolation of data using the form A0/2 + SUM(A_i cos(ix) + B_i sin(ix)), great for numerical analysis courses. Enjoy! |

| **precalculussequences.zip** | 6k | 15-04-25 | | **Precalculus Sequences** This folder contains nine files associated with arithmetic, geometric and harmonic sequences. These programs are usually helpful for pre-calculus students. Enjoy! |

| **hailstone.zip** | 1k | 15-02-15 | | **Collatz Conjecture (Hailstone Sequence) ** Enter a number and this application will create a Hailstone Sequence. CHANGES: Better than last version, will tell you the longest sequence achieved on your calculator |

| **stirlingnumbers.zip** | 1k | 14-08-25 | | **Stirling Numbers** This file contains two programs, one for Stirling numbers of the first kind and one for the second kind. Please read over the documentation for further information. Enjoy! |

| **seriessum1.zip** | 26k | 14-06-30 | | **Sum of Series** Two programs to give you the sum of arithmetic and geometric series. They are menu(-driven, and supposed to cover all possibilities so that you only have to make one choice at the upstart, and then get to input your information without having to answer various questions. |

| **combo.zip** | 5k | 14-06-04 | | **Positive and Negative Combinations** A01: This little program combines the positive/negative values of four numbers. There are 2^4 combinations that four numbers can have, either as positive or negative. In for example a trigonometric program the same values come as either. The program is in a demo version with A=1, B=2, C=3, and D=4. ACOMBO: This little program combines three values of three value memories: 1, 0, and -1. There are 3^3=27 such combinations. The program is in a demo version with A, B, and C set to 1. You are supposed to use them as subroutines in for example a trig. program of your own. |

| **exponentialsum.zip** | 1k | 14-04-09 | | **Exponential Sum** This program computes values for the lower and upper incomplete gamma functions provided the degrees of freedom are counting numbers. Enjoy! |

| **truth.zip** | 123k | 13-01-31 | | **Truth Table Generator v1.0** A quick and dirty truth table generator written in TI-BASIC. Enter any expression (e.x. "not(P or Q) and P") and the program will automagically generate a truth table matrix and store it into [[A]]. The matrix orders the variable columns in the order you input them (the previous example would be P | Q | TruthValue). For a quick demo, check the screenshot. |

| **fastpyth.zip** | 1k | 12-10-15 | | **Fast Pythagorean Triplet Solver 2.0** This is the fast version of the Pythagorean Triplet solver presented in Chapter 5 of the book "Programming the TI-83 Plus/TI-84 Plus". It solves for Pythagorean Triplets given a target value N, where the three numbers (A, B, C) in the triplet satisfy both A+B+C=N and A^2+B^2=C^2. More info at http://cemete.ch/book |

| **starnumbers.zip** | 1k | 12-07-19 | | **Star Numbers** This program computes the nth number in the star number sequence. Enjoy! |

| **binet.zip** | 1k | 12-07-19 | | **Binet** This program computes the nth number in the Fibonacci sequence using Binet's formula. Enjoy! |

| **eulersconstant.zip** | 1k | 12-07-11 | | **Euler's Constant** This program will demonstrate how slow the convergence of the series 1/n - ln n converges to Euler's constant. Great for introductory numerical analysis courses. It will also display the Euler constant up to 15 decimal places and store the value in the variable E to be used in computations. Enjoy! |

| **edef.zip** | 1k | 12-07-11 | | **E-Definition** This file contains two versions for the definition of e. One version asks that you plug in a value of N and it computes the approximate value of e based on the definition, but if N> 10^10 power it can be off. This makes it a great demo for people who wish to show some limitations of the calculator itself. The second file EDEF2 generates lists where the user enters in the power of 10 they wish to use. It will use L1 as the input into the definition, L2 is the value of 1/N, L3 is 1+1/N and L4 is (1+1/N)^N. This is great for teachers who wish to demonstrate the definition of e in class. Enjoy! |

| **numberoforderings.zip** | 1k | 12-02-05 | | **Number of Orderings** This program will compute the number of ways a sequence of two types can be ordered. Please read over the included documentation for information, this is not just distinguishable permutations, this will tell you the number of ways the values switch from one type to another. It is more detailed than the distinguishable permutations. Enjoy! |

| **1f1.zip** | 1k | 11-12-16 | | **Kummer Functions** This program computes the values for a confluent hypergeometric function of the first kind, also known as a Kummer function. Useful for series solutions to DEs. Enjoy! |

| **arithmeticsequence.zip** | 1k | 11-12-05 | | **arithmetic sequence** This program will generate an arithmetic sequence, the nth term in the sequence and the sum of the sequence. Enjoy! |

| **divideddifference.zip** | 1k | 11-11-26 | | **Divided Difference** This program will compute Newton's divided differences. The user enters in the x and y coordinates and then chooses to see the difference table (as matrix B) or a graph of the interpolating polynomial. Enjoy! |

| **chebyshevnodes.zip** | 1k | 11-11-26 | | **chebyshev nodes** This program will generate chebyshev nodes for interpolation purposes in the interval [a, b]. Enjoy! |

| **bernoullinumbers.zip** | 1k | 11-11-22 | | **Bernoulli Numbers** This program will compute Bernoulli numbers. Enjoy! |

| **lebesguenumbers.zip** | 1k | 11-11-22 | | **Lebesgue Numbers** This program will compute Lebesgue Numbers. Enjoy! |

| **halleyrootfinder.zip** | 1k | 11-11-22 | | **Halley's Root Finder** This program uses Halley cubically convergent root finding method for functions. Enjoy! |

| **eulernumbers.zip** | 1k | 11-11-22 | | **Euler Numbers** This program computes Euler numbers. Enjoy! |

| **ngonalnumbers.zip** | 1k | 11-11-11 | | **N-Gonal Numbers** This program will compute the nth number in a n-gonal sequence. The user inputs the number in the sequence and the number of sides the shape is to have and the program outputs the number in the sequence. For example, if you are working with triangular numbers and you want the fourth number, then enter 4 for the number in the sequence and 3 for the number of sides. The program does the rest. Enjoy! |

| **fibonaccisequencebyjonbus.zip** | 1k | 11-03-03 | | **Fibonacci Sequence** Find fib(n) quickly. Works up to the 480th term. |

| **collatzbyjonbush.zip** | 1k | 11-02-01 | | **COLLATZ by Jon Bush** This program executes the Collatz Conjecture on any number. |

| **allsequence.zip** | 1k | 11-01-01 | | **Nth term finder** This program will find the nth term in the sequence. |

| **pascal01.zip** | 1k | 10-10-26 | | **Pascal01** This is a program that will give you ANY desired row of pascal's triangle by simply entering in the row number. |

| **seriesum.zip** | 1k | 10-05-03 | | **Series Summation Utility** Allows you to calculate the sum of a series without rewriting the program every time. You provide the general term and the starting and ending indices and the calculator does the rest. Extremely useful for anyone studying infinite series. |

| **aritseq.zip** | 1k | 10-04-17 | | **Arithmetic Sequences** Calculate numbers in an arithmetic sequence |

| **sumssequencescompoundinterest.zip** | 1k | 10-03-25 | | **Sums, Sequences, and Compound** Sums, Sequences, and Compound Intrest |

| **fourierseriesv1.00.zip** | 45k | 09-11-27 | | **Fourier Series v1.00** A Fourier series is a series of sums of sines and cosines that approximate any function over a period of your choice. Since it is a series, there are an infinite number of terms but you are, obviously, able to choose how many terms you want to compute the series up to. You will need a TI-83 plus or a TI-84 plus to run this program. This program will compute the Fourier series of any function, including a piece-wise function across any range. It is perfect for anybody who is checking their homework solutions or checking their test questions. Due to the limited speed of the TI-83 plus/TI-84 plus, the program may take some time to compute for complex functions. By complex, I mean functions that are comprised of several pieces or are, in general, complex with many parts. |

| **seriessequencesarithmetic.zip** | 1k | 09-04-22 | | **Series&Sequences Solver (Arithmetic&Geometric)** This is an explicit, recursive, finite, and infinite solver for arithmetic and geometric series and sequences. Plus,(for those of you who choose not to use the solving feature)this program tells you all of the formulas. Please read the readme for instructions. |

| **gmathsigma.zip** | 1k | 09-04-05 | | **Quick Sum of a Sequence** This program will save some keystrokes. Just enter the sequence and the max and min for n. The sum will be given. Remember to return the calculator to MODE FUNC after exiting the program. |

| **arthmseqti83plus.zip** | 1k | 08-08-24 | | **Arithmetic Sequence ** Just type in 3 paramaters and... BAM!!! You have the sequence. Quick and easy to use during class to pretend like you memorized the thing. |

| **mat0defi.zip** | 1k | 08-08-24 | | **SEQUENCE DEFINER** Input the first 5 terms of a sequence and the program will try to define it. This program can define arithmetic progressions, geometric progressions, polinomial sequences of the second and third degree. |

| **sumproduct.zip** | 1k | 08-06-12 | | **The Smallest Series Sum/Productizer** Quick! Whats the sum of all the multiples of 7 from 7 to 140? If you don't know that it's 1470, you need this program! This is a 200-byte program that sums or products any series (arithmatic, geometric, trig, etc.) using x. |

| **triangular.zip** | 1k | 08-02-14 | | **Triangular Numbers and the Fibonocii Series** This file's main program is TRIANGUL(ar), which displays your choice triangular number (1+2+3+4+5+...), but it also includes FIBONOCI, a fantastic program that displays the Fibonocii Series one by one. |

| **sequenceandseriessolver.8.zip** | 1k | 07-12-23 | | **SEQSER** This program will solve for the first term, last term, number of terms, or common difference of an arithmetic sequence. Will also find the sum of an arithmetic series given the last term or the common difference. You can also solve for the nth term, first term, number of terms, or common ratio of a geometric sequence. Will also calculate the sum of a geometric series given the nth term or the number of terms. It will also find the sum of an infinite geometric series. |

| **sigmaeditor.zip** | 128k | 07-12-06 | | **Sigma Notation Editor** an editor to make series and summation related stuff on the calculator easier. Especially useful for graphing power series. |

| **pressfib.zip** | 2k | 07-11-08 | | **Pressable Fibonacci Seq** By pressing the down arrow key, you will get the next number in the fibonacci seq starting with 0. And to end the sequence, just press "." or period. |

| **zfibonacci.zip** | 1k | 07-09-08 | | **Fibonacci Number and Sequence** Using the For( function to list a fibonacci sequence. Only have to input the ending number that you want to find out. |

| **srsnseqs.zip** | 2k | 07-06-09 | | **Series and Sequences Version 1.4 by Mathanomics** SRSNSEQS is an Arithmetic and Geometric Series and Sequences Solver. It can find terms in a sequences of either Arithmetic or Geometric Patterns, Find Sums of Series and Infinite Series, and can solve Permutations. It can currently calculate for any variable in these equations, and check its answer. |

| **recursiveseq.zip** | 1k | 07-05-16 | | **Recursive Sequences** Quite a fantastics program for evaluating and even graphing Recursive Sequences! Type in the sequence expression [X(1) = A(N-1)], the number of given terms, (obviously) the values of the given terms, and whether or not to graph the sequence. The sequence will be calculated as well as the sum. |

| **pascalsolver.zip** | 161k | 07-05-07 | | **Pascal's Triangle Solver** This program will return any row of Pascal's Triangle from rows 0 to 336 (row 336 contains the largest numbers the calculator can handle). Great for expanding binomials. Very easy to use with a total size of only 232 bytes. Compatible with MirageOS and other shells. |

| **fibseqs.zip** | 1k | 07-03-31 | | **Extended Fibonacci Sequences** This program allows you to view an extended Fibonacci Sequence. You can view the normal Fibonacci Sequence by entering "2" when prompted, as each number is the sum of the two before it. Similarly, enter "3" to have a sequence with each number being the sum of the last three numbers. This is sometimes called the tribonacci sequence. You can enter in any number between 1 and 20; after 20, it takes too long to calculate. |

| **sequencerulefinder.zip** | 1k | 07-03-06 | | **Sequence Rule Finder** This program will find the general rule for any 'n'th term in a sequence. A useful, fun, and educational math tool, be sure to download this! This version is for the TI-83+. |

| **fibonaci15.zip** | 1k | 06-05-14 | | **Fibonacci Generator** Creates a list with the first 481 fibonacci numbers in it and and after that you can search for any number on the sequence. |

| **arithser.zip** | 1k | 06-02-17 | | **Arithmetic Series Solver (Includes Sigma Notation!)** Simple but incredibly useful. Solves partial sum, nth term, and sigma series sequences. It even outputs sigma notation! |

| **arithseq.zip** | 1k | 05-11-12 | | **Arithmetic Sequences** All you need! Enter the first three terms in the sequence, and let the calculator do the rest. This awesom program can find any term in the sequence, write the equation, and even graph it! A must-have for all Algebra students, and great for others, too. |

| **msigma.zip** | 1k | 05-10-26 | | **Simple Sigma Solver** Simple sigma notation solver. Input lists, run the program, and it gives you the answer. You can even put a formula to the right of the sigma. There's even a little diagram in the program. |

| **fibo.zip** | 4k | 05-09-25 | | **Fibonacci - All in one (Dutch Version 2.0)** This updated version of Fibonacci All in one has even more options! Now it can convert a number to a fibonacci-number and the opposite, make a list of fibonacci-numbers. All with several controls like not negative etc. I also added some instructions! Don't wait! If you're a fibonacci-freak, you must have this amazing prog! |

| **mysequence.zip** | 1k | 05-06-04 | | **Sequence** Does recursive and geometric sequences in arithmatic and geometric. easy to use. |

| **seqv1.zip** | 1k | 05-03-28 | | **Sequence v1.1** This more updated version of Sequence has a more user-friendly opening menu, along with a "Quit" option so that the user no longer has to break from the program. It maintains the same capabilities as the first version, including its ability to calculate infinite geometric sequences and Fibonacci sequences -- two rarely available features. |

| **pascal_row.zip** | 1k | 05-03-07 | | **Pascal's Triangle** This simple program allows you to view a specific row of the pascal's triangle. |

| **geomari.zip** | 1k | 04-12-03 | | **GEOMARI** Solves geometric sequences, geometric series, arithmetic sequences, and arithmetic series. |

| **sequenceterm.zip** | 1k | 04-10-23 | | **Sequence Double Program** Two programs in one! The first is a "Nth Term" program that will tell you what the value of any term is. All you have to do is enter the first term, what term you want, and the constant difference. The second program is a "Next Terms" program that will give you the value of the next N terms of a sequence. All you have to do is enter the first 2 terms and how many terms you want. |

| **bn.zip** | 1k | 04-09-09 | | **Bernoulli Numbers** Bernoulli numbers are very important in analytic number theory. This program finds the Nth Bernoulli number given N. Under 160 bytes! |

| **arithsqnandfinda1.zip** | 1k | 04-09-06 | | **Arithmetic Sequence AND Find A1** Two programs, one to calculate the Nth term in a arithmetic sequence, and another problem to do the opposite, taking a Nth term and calculating out for you the first term. |

| **fibonacci.zip** | 1k | 04-08-20 | | **Fibonacci** This program instantly gives the nth term of the fibonacci sequence. Only 31 bytes! |

| **outdoneseries.zip** | 8k | 04-06-23 | | **Outdone TI Series 1.0** The acme series program! Read the readme for more details. Not based on any related programs. |

| **fibseqnc.zip** | 1k | 04-05-03 | | **Fibonacci Sequence** This is an easy to use program that will give you the number of the sequence in terms of n. |

| **pascal04.zip** | 1k | 04-04-25 | | **PASCAL'S Triangle** This program easily shows you the numbers in a certain row of pascal's triangle. All you have to do is type in the row number you want to see and there you go! Very convienent for binomial expansion and other applications where you only need one row and not the entire triangle. |

| **sumnotat.zip** | 1k | 04-04-06 | | **Summation Notation** Sums a function to the desired number of terms. Also know as Sigma Notation. |

| **sequences.zip** | 1k | 04-03-28 | | **Sequences** This figures out a digit in or the sum of an arithmetic or geometric sequence. Tell me what you think at leonardo73187@msn.com |

| **sigma1.2.zip** | 1k | 04-03-27 | | **Sigma Program v1.3** Enter the lower limit, upper limit, and general term of a series, and this program will solve it. The quotation mark is no longer necessary for the general term. |

| **sequence_series.zip** | 1k | 04-01-28 | | **Sequence 1.0** This program will calculate all the series (infinite included). |

| **fibonacc.zip** | 1k | 03-12-29 | | **Fibonacc** This extremely fast program will calculate any digit of the fibonacci sequence. Only 117 bytes! A must have for any math nerd :) |

| **fibonum.zip** | 1k | 03-12-28 | | **Fibonacci's Numbers** A neat little program for viewing Fibonacci's Numbers, one of the most common patterns in math! Includes "n" input mode and table viewing mode. |

| **cnc.zip** | 1k | 03-12-28 | | **Consecutive Numbers Counter** Have you ever encountered this problem on the PSATs or SATs,"What is 1+2+3...+100?" Did you find yourself picking up the calculator and manually adding 1+2+3...+100? If you ever see that problem on any tests again, just go to this program, and it will work the problem out and give you the answer! What a time saver! |

| **serseqx.zip** | 2k | 03-12-18 | | **SERSEQ X** SERSEQ X V 1.7.0 Created by Xilver This program is capable of all Arithmetic and Geometric functions. It can calculate Arithmetic, and Geometric Series and Sequences, finding the nth term, the sum, the Arithmetic and Geometric mean and also the Infinite Series. Standard or abnormal equations - doesn't matter. If anyone wants any more features or needs help, email me at silver_extreme7@hotmail.com |

| **fibbonacci.zip** | 1k | 03-11-12 | | **Fastest Fibonacci Ever** This is the fastest fibonacci progam ever! It's also the smallest, and only uses 2 variables. |

| **nickfibonacci.zip** | 1k | 03-11-07 | | **Fibonacci** YEAH! Fibonacci is back YEAH! Now you can get all kinds of Fibonacci stuff. |

| **pascals_triangle.zip** | 1k | 03-10-19 | | **Pascal's triangle** Solves for any row of the pascal's triangle |

| **pascal3.zip** | 1k | 03-09-16 | | **Pascal** This is a very good program to have just enter the row and the answer appear. |

| **pascals83p.zip** | 1k | 03-08-22 | | **Pascal** Displays a row of Pascal's Triangle with the built in probability functions. |

| **finite.zip** | 1k | 03-06-09 | | **geometric series** this program finds the sum of finite and infinite geometric series |

| **consecut.zip** | 1k | 03-05-23 | | **Consecutive Adder** This program finds the cumulative sum of 1 through an input number. Ex -> 25, 1+2+3+4...+25. Just follow the on-screeen instructions |

| **sum.zip** | 1k | 03-04-24 | | **Sum Finder** This program finds the sum of an arithmetic or geometric sequence. Please consult the included Readme file for instructions. |

| **fib.zip** | 1k | 03-04-14 | | **Fibonaci Finder** In this program you type in the position of the Fibonaci number you want to find, and it returns the number. |

| **pascaltriangle.zip** | 1k | 03-03-16 | | **Pascal's Triangle** Displays Pascal's Triangle's Numbers. Press Enter to Pause. |

| **basicseries.zip** | 1k | 03-03-12 | | **Sequences and Series** This program calculates numerical data in sequences and series of numbers. Please use, study, and modify this program for your own needs. |

| **seriessum.zip** | 1k | 03-03-08 | | **Series Sum Finder Version 1.0** This program will find the sum of any arithmetic series, finite geometric series, or infinite geometric series when you input the information about the series that is prompted. |

| **pasctrgl.zip** | 1k | 02-10-15 | | **Pascal's Triangle** Gives the input row from the Pascal's Triangle (ALGEBRA II). |

| **seriesx.zip** | 1k | 02-08-09 | | **Series** Solves for an unknown in the equation for the sum of a series of a geometric or arithmetic sequence. It does abnormal problems also included in the FST texbook I used (bouncing ball problems and banking problems). |

| **sequencer.zip** | 1k | 02-08-09 | | **Sequence** Solves for an unknown in the equation for a geometric or arithmetic sequence. |

| **bhseqser.zip** | 2k | 02-06-01 | | **Sequences and Series** Sequences and Series by Ben Hall. Use this program to calculate anything you want to know for Arithmatic or Geometric sequences or series. |

| **partial83p.zip** | 2k | 02-05-20 | | **Partial Sums of a Recursive Series** Sequence and graph of partial sums. Table and graph option included. |

| **sequence.zip** | 1k | 02-05-12 | | **Sequences** Its capable of Arithmetic and Geometric functions. It can compute the common difference, First X terms, Nth Term, and Sum in either arithmetic or geometric. If anyone wants any more features, email me at andrew@ibelite.com |

| **seriesuc.zip** | 1k | 02-05-11 | | **Algebraic Series v1** This program solves all of the algebraic series formulae that i have learned. version 2 will have more. |

| **pascaltr.zip** | 1k | 02-03-28 | | **Pascal's Triangle** Given a row number or a binomial expansion exponent, this will show you the numbers (coefficients) for that row/exponent. |

| **agseqser.zip** | 2k | 02-02-16 | | **Arith and geom ser and seq** Arithmetic and geometric series and sequences |

| **sigma.zip** | 1k | 02-02-16 | | **Sigma Notation Solver** Tells the sequence and series when you provice upper limit, lower limit, and rule |

| **findsum.zip** | 1k | 02-02-16 | | **Arithmetic Sequence Helper** Tells you the the value of the term and the sum of the numbers up to that point when you provide the start point, difference, and the value of N |

| **dder.zip** | 1k | 01-12-22 | | **Consecutive Adder** This program will instantly add 1+2+3+4+5+...n where n is any number you enter when you run the program. |

| **agserseq.zip** | 4k | 01-12-22 | | **Series and Sequences** Arithmetic and Geometric sequences and series. For intro to calculus. sigma notation, distance between numbers, sequences, series. works on mirage also |

| **suites.zip** | 1k | 01-08-05 | | **Suites** Contient de quoi calculer les termes d'une suite définie par récurrence |

| **aseq.zip** | 1k | 01-08-04 | | **SS Tech. Series and Sequance Solver+Grapher** Self-Explanitory SEE README |

| **series.zip** | 3k | 01-06-17 | | **Series and Sequences v1.10** This program is a combination of what used to be my series evaluator, gauss, and fibonacci programs. It deals with displaying the series and individual values of the Gauss and Fibonacci sequences, as well as various functions regarding arithmetic and geometric series. |

| **pascal2.zip** | 2k | 01-04-29 | | **Pascal Rows** This program will allow you to enter in the row of Pascal's triangle and will display it for you |

| **iseries.zip** | 1k | 01-04-04 | | **Infinite Series v1.0** This program will ask for you to input the first and second number in a series and it will tell you whether or not it is divergent or convergent. If it is convergent the limit is given also. Very helpful in trigonometry!! |

| **sotn.zip** | 1k | 01-03-11 | | **Sum-0-The Numbers** Supplies the sum of the numbers between 1 and whatever you want. Pretty Cool. |

| **pascal1.zip** | 1k | 01-02-04 | | **Pascal Triangle Row Finder** see readme |

| **num.zip** | 1k | 00-09-28 | | **Anum** A simple program to solve equations like N+(N-1)+(N-2)... and so on. |

| **pascal.zip** | 1k | 00-09-24 | | **Pascal's Triangle v1.11** This program lets you find certain values dealing with Pascal's Triangle. |

| **gauss.zip** | 1k | 00-07-14 | | **Gauss Sequence v1.10** This program executes various functions dealing with the Gauss numbers (triangle numbers). |

| **fibonaci.zip** | 1k | 00-07-14 | | **Fibonacci Sequence v1.10** This program executes various functions dealing with the Fibonacci sequence. |

| **pascalt.zip** | 1k | 00-05-31 | | **Pascal's Triangle** This is a TINY program to give you any row of Pascal's Triangle -- it's only TWO LINES OF BASIC CODE!!! |

| **seqandser.zip** | 1k | 00-05-20 | | **Sequence and Series Tools** Better than any other program like it in the archives. Believe me, I've downloaded them all! Solves for the other 2 pieces of info in an arithmetic series given the other three. Does the same for a geometric series, and also comes with Recurso, to help you evaluate terms and find partial sums of a sequence recursively. |

| **seriesprgm.zip** | 1k | 00-05-19 | | **Geometric and Arithmetic Series Programs** A set of programs for finding any term value of a number and partial sum of any numbers in an arithmetic or geometric series. |

| **arithmetic.zip** | 1k | 00-04-09 | | **Arithmetic Sequence/Series v1** Solves for these 5 variables (you have to input 3 out of 5): A1, An, D, N, Sn. Its small and displays the correct answer everytime. I use this myself and I never had a problem with it except when I make a mistake typing in the variables. Make sure you input the variables in correctly. |