Question

If you horizontally compress exponential function f(x)=2^x by a factor by a of 5, which of these is the equation of the new function?

Answer 1

The anwser is -2x my dude 

Answer 2

Answer: A. $f(5x)=2^{5x}$

Step-by-step explanation:

When we compress a function $y= f(x)$ by a scale factor of 'k', where k >1, then the function after compression will become :

$y= f(kx)$, where k>1

Given: Exponential function: $f(x)=2^x$

The scale factor of the compression (k): 5

Then after horizontally compression , the exponential function will become :

$f(5x)=2^{(5x)}$