Mark (√) against the correct answer in the following:

Question:

Mark (√) against the correct answer in the following:

The range of $f(x)=a^{x}$, where $a>0$ is

A. $[-\infty, 0]$

B. $[-\infty, 0)$

C. $[0, \infty)$

D. $(0, \infty)$

 

Solution:

$f(x)=a^{x}$

when $x<0$

$0

When $x \geq 0$

$a^{x}>0$

Therefore range of $f(x)=a^{x}=(0, \infty)$

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