Evaluate the Function f(9) = square root of x

$f (9) = \sqrt{x}$

Step 1

Replace the variable $x$ with $9$ in the expression.

$f (9) = \sqrt{9}$

Step 2

Simplify the result.

Remove parentheses.

$f (9) = \sqrt{9}$

Rewrite $9$ as $3^{2}$ .

$f (9) = \sqrt{3^{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$f (9) = 3$

The final answer is $3$ .

$3$

Step 3