Casio FX-991EX and FX-300ES

[Pekis]

(01-09-2019 07:57 PM)Csaba Tizedes Wrote:  

(12-26-2017 09:58 AM)Pekis Wrote:  combined with a very small secant method program

Hi, can you post the code here, please? Have you that *damn* CASIO's hieroglyphic character set to publish program lists?

Thanks!

Hello,

Here it is:

"X1"?->A
"X2"?->B
"YTARGET"?->T
A->X:Prog"YFX"
Y-T->R
B->X:Prog"YFX"
Y-T->S
Lbl1
B-S(B-A)/(S-R)->C
:C->X⊿
Prog"YFX":Y-T->Q
:A->B:R->S:C->A:Q->R
:Goto 1

Where:
X1 and X2 are the initial values
T is the target value for y=f(x), ie solve f(x)-T=0
The function f is contained in Prog"YFX", calculating Y=f(X) the way you like
The program displays each intermediate X value and you have to press EXE to continue until OK for you