Re: Help needed with csolve function on the 92
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Re: Help needed with csolve function on the 92
Did you type 2ND-I to type the complex I? It appears as italics in the
display. The standard i on the keyboard will not be interpreted as complex.
________________
Jeff Tyrrill
http://tyrrill-ticalc.home.ml.org/
http://ti-files.home.ml.org/
-----Original Message-----
From: Open discussion of TI Graphing Calculators On Behalf Of Alexis
Sent: Friday, September 12, 1997 9:07 AM
To: CALC-TI@LISTS.PPP.TI.COM
Subject: Help needed with csolve function on the 92
Hello !
Yesterday I had to solve the following equation :
(-3+i)x=B2+(5i-1)x+2=3D0
I tried it with the csolve fucntion and all I got was an approximation. I
thus tried to use the well known quadratic formula within a function
(-b+/-sqr(b=B2-4ac)/2a) and I got the exact answer. How is that possible =
?
Doesn't the 92 use this formula to solve that kind of equation ?
Anyway, I'd like to write a function that would extract the a,b and c fro=
m
a quadratic equation and display the solutions as a list but I can't figu=
re
how to extract the coefs. Has anyone an idea ?
TIA
Alexis