Precalculus Examples

y = x^{2} + 4

$y = x^{2} + 4$

Step 1

To rewrite as a function of

x

$x$ , write the equation so that

y

$y$ is by itself on one side of the equal sign and an expression involving only

x

$x$ is on the other side.

f (x) = x^{2} + 4

$f (x) = x^{2} + 4$

Enter YOUR Problem

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

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