Precalculus Examples

$\log_{7} (7^{40})$

Step 1

Use logarithm rules to move $40$ out of the exponent.

$40 \log_{7} (7)$

Step 2

Logarithm base $7$ of $7$ is $1$ .

$40 \cdot 1$

Step 3

Multiply $40$ by $1$ .

$40$

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