Precalculus Examples

$f (x) = 5$ ,

$g (x) = x$

Step 1

Find the product of the functions.

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Step 1.1

Replace the function designators with the actual functions in

$f (x) \cdot (g (x))$ .

$(5) \cdot (x)$

Step 1.2

Multiply

$5$ by

$x$ .

$5 x$

Step 2

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Step 3

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