Precalculus Examples

$y = \frac{x - 1}{x + 1}$

Step 1

Set $\frac{x - 1}{x + 1}$ equal to $0$ .

$\frac{x - 1}{x + 1} = 0$

Step 2

Solve for $x$ .

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Step 2.1

Set the numerator equal to zero.

$x - 1 = 0$

Step 2.2

Add $1$ to both sides of the equation.

$x = 1$

$x = 1$

Step 3

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