Examples

f (x) = 5

$f (x) = 5$ ,

g (x) = x

$g (x) = x$

Step 1

Replace the function designators with the actual functions in

f (x) + g (x)

$f (x) + g (x)$ .

5 + 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)

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Step 3

Enter YOUR Problem