Calculus Examples

$f (x) = \ln (x)$

Step 1

Set $\ln (x)$ equal to $0$ .

$\ln (x) = 0$

Step 2

Solve for $x$ .

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Step 2.1

To solve for $x$ , rewrite the equation using properties of logarithms.

$e^{\ln (x)} = e^{0}$

Step 2.2

Rewrite $\ln (x) = 0$ in exponential form using the definition of a logarithm. If $x$ and $b$ are positive real numbers and $b \neq 1$ , then $\log_{b} (x) = y$ is equivalent to $b^{y} = x$ .

$e^{0} = x$

Step 2.3

Solve for $x$ .

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Step 2.3.1

Rewrite the equation as $x = e^{0}$ .

$x = e^{0}$

Step 2.3.2

Anything raised to $0$ is $1$ .

$x = 1$

Step 3