K example solve operation – Casio fx-115ES User Manual
Page 32
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• An error (Variable ERROR) occurs when the solution variable is
not included in the expression being solved.
k Example SOLVE Operation
Example: To solve
y
=
ax
2
+
b
for
x
when
y
= 0,
a
= 1, and
b
= –2.
MATH
S
f(Y)Ss(=)Sy(A)
S)(X)w+Se(B)
1)(,)S)(X)
1s(SOLVE)
Math
Prompts for input of a value for Y.
Current value of Y
0=
Math
1=
Math
y2=
Math
Current value of X
=
Math
Solution Screen
• To interrupt an ongoing SOLVE operation, press A.
Precautions when Using SOLVE
• SOLVE may not be able to obtain a solution because of the initial
value (assumed value) of the solution variable. If this happens, try
changing the initial value of the solution variable.
• SOLVE may not be able to determine the correct solution, even
when one exists.
Math
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