Re: Symbolic85
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Against popular belief, it is quite possible to have the TI-85 give you a
symbolic differentiation answer ...
In fact, I wrote a symbolic differentiation program about 1 year ago. It
will give you the actuall symbolic algebraic answer for many different
types of differentiation including: power rule, division rule,
multiplication rule, basic chain rule, log rules, and a few others. the
best part is that it is expandable - there is a simple format to follow, so
that once a new rule is understood, it can be programmed very easily and
added to the symbolic program as a sub-program. The only limitation is
that it cannot handle more than one rule at one time. ( ie no chain rule
inside a division rule type equation ) If anyone is interested, mail me
and i'll see that you get a copy. I haven't touched the program in a while,
so if anyone would like to try to complete it ( add more kinds of
differentiation and solve the nested rules problem, feel free to give it a
try ). have fun.
jj
At 11:48 PM 10/27/96 -0600, Craig & Brandee wrote:
>This is just a quick question on the machine. If I graph y1=x^2 then
>graph y2=der1(y1,x) it obviously gives me a parabola and the derivative
>( a straight line). OK, is there any possible way with the calculator
>to make it display a formula for the function of y2. Could this be
>achevied with the Strings in the calc? Could this be a half-ass
>symbolic solver? Am I bariking up a non existant tree? Any Ideas or
>insights would help. I am not a CS major so please be kind.
>
>
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\ JJ Johns
\ johnsj@rpi.edu
\ Creator of The Not-So Complete TI-92 Archive
| http://johnsj.stu.rpi.edu/ti/ti92.html
/ Observations:
/ "The quickest way to get an engineer to solve a problem
/ is to declare it it totally impossible."
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