Trigonometry Examples

$\ln (\frac{1}{e})$

Step 1

Rewrite $\ln (\frac{1}{e})$ as $\ln (1) - \ln (e)$ .

$\ln (1) - \ln (e)$

Step 2

The natural logarithm of $1$ is $0$ .

$0 - \ln (e)$

Step 3

The natural logarithm of $e$ is $1$ .

$0 - 1 \cdot 1$

Step 4

Multiply $- 1$ by $1$ .

$0 - 1$

Step 5

Subtract $1$ from $0$ .

$- 1$