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 = ax2 + b for x when y = 0, a = 1, and b = –2.

MATH

Sf(Y)Ss(=)Sy(A) S)(X)w+Se(B)

1)(,)S)(X)

Math

Math

1s(SOLVE)

Prompts for input of a value for Y.

Current value of Y

Math

0=

Math

1=

Math

y2=

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.

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