Precalculus Examples

f (x) = 6 x^{3}

$f (x) = 6 x^{3}$ ,

g (x) = 3 x + 4

$g (x) = 3 x + 4$ ,

f (x) + g (x)

$f (x) + g (x)$

Step 1

Replace the function designators in

f (x) + g (x)

$f (x) + g (x)$ with the actual functions.

6 x^{3} + 3 x + 4

$6 x^{3} + 3 x + 4$

Step 2

Remove parentheses.

6 x^{3} + 3 x + 4

$6 x^{3} + 3 x + 4$

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⎡ ⎢ ⎣ \begin{matrix} x^{2} & \frac{1}{2} \sqrt{π} & \int x d x \end{matrix} ⎤ ⎥ ⎦

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