Casio fx-115ES User Manual page 32

• An error (Variable ERROR) occurs when the solution variable is
not included in the expression being solved.
k Example SOLVE Operation
Example: To solve
MATH
Sf(Y)Ss(=)Sy(A)
S)(X)w+Se(B)
• 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.
2
y ax b
= +
1)(,)S)(X)
1s(SOLVE)
Prompts for input of a value for Y.
y2=
E-30
x y
for when
0=
1=
=
a
= 0, = 1, and
Current value of Y
Current value of X
Solution Screen
b
= –2.
Math
Math
Math
Math
Math
Math