Casio fx-115ES Manual do Utilizador descarregar pdf (Página 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

+ b for x when y = 0, a = 1, and b = –2.

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Sf(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

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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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Casio fx-115ES Manual do Utilizador Página 32