Precalculus Examples

$f (x) = 3 x - 7$ , $x = 3$

Step 1

Replace the variable $x$ with $3$ in the expression.

$f (3) = 3 (3) - 7$

Step 2

Simplify the result.

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Step 2.1

Multiply $3$ by $3$ .

$f (3) = 9 - 7$

Step 2.2

Subtract $7$ from $9$ .

$f (3) = 2$

Step 2.3

The final answer is $2$ .

$2$

Step 3

Enter YOUR Problem

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$