Casio fx-115ES - Manual (Page 32)

E-30
• 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.
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S f(Y)Ss(=)Sy(A)
S)(X)w+Se(B)
1)(,)S)(X)
1s(SOLVE)
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Prompts for input of a value for Y.
Current value of Y
0=
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1=
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y2=
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Current value of X
=
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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.
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