Calculus Examples

$f (x) = x^{2} + 3 x$ , $x = - 1$

Step 1

Replace the variable $x$ with $- 1$ in the expression.

$f (- 1) = {(- 1)}^{2} + 3 (- 1)$

Step 2

Simplify the result.

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Step 2.1

Simplify each term.

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Step 2.1.1

Raise $- 1$ to the power of $2$ .

$f (- 1) = 1 + 3 (- 1)$

Step 2.1.2

Multiply $3$ by $- 1$ .

$f (- 1) = 1 - 3$

Step 2.2

Subtract $3$ from $1$ .

$f (- 1) = - 2$

Step 2.3

The final answer is $- 2$ .

$- 2$

Step 3