LEXIBOOK GC700FR Manuel D'instruction page 63

Ex :
A=B action si A=B : action suivante.
A=B Goto x : action suivante effectuée seulement si A≠B.
On a une équation y=ax
formules =b -4ac et x=(-b±√
2
actions soient différentes selon que
"A="? A:"B="?
Lbl 1:(√D-B)÷2÷A (-√D-B)÷2÷A Lbl 2:"FIN" 083
Pour saisir le programme :
[ALPHA] ["] [ALPHA] [A] [SHIFT] [=] [ALPHA] ["]
[ALPHA] [?] [
[ALPHA] ["] [ALPHA] [B] [SHIFT] [=] [ALPHA] ["]
[ALPHA] [?] [
[ALPHA] ["] [ALPHA] [C] [SHIFT] [=] [ALPHA] ["]
[ALPHA] [?] [
[ALPHA][B][X ][-]4 [ALPHA][A][ALPHA][C] [
2
[ALPHA][D][SHIFT][≥]0 [SHIFT][
[ALPHA]["][SHIFT][D][SHIFT][<] 0 [ALPHA]["][ALPHA][
[SHIFT] [Lbl] 1 [:]
[(] [√][ALPHA][D] [-][ALPHA][B][)][÷]2[÷][ALPHA][A][
[(] [SHIFT] [(-)][√][ALPHA][D] [-][ALPHA][B][)][÷]2[÷][ALPHA][A][
[SHIFT] [Lbl] 2 [:]
[SHIFT][ALPHA] ["] [F] [I] [N] ["]
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GC700ZFRIM0108.indd 63
+bx+c qu'on veut résoudre pour y=0, en utilisant les
2
)/2a si
B:"C="? C:B2-4AC
][ALPHA] [A] [:]
][ALPHA] [B] [:]
][ALPHA] [C] [:]
[SHIFT][Goto]1 [:] ->
≥0. On utilise Goto pour que les
soit supérieur ou non à 0.
D:D≥0 Goto 1:"D<0" Goto 2:
->
->
->
][ALPHA][D] [:]
->
][SHIFT][Gotto] 2 [:]
->
->
]
->
->
->
->
"A=" ? A:
"B=" ? B:
"C=" ? C:
B -4AC D:
2
D≥ Goto 1:
"D"< 0" Gotto 2:
Lbl 1:
(√D-B)÷2÷A
]
(-√D-B)÷2÷A
Lbl 2:
"FIN"
63
5/3/08 16:56:37