# Math Help - graph, constant and improving...

1. ## graph, constant and improving...

2. Try plugging various values in for "c", graphing in your calculator or other software, and tracking what the changes are.

3. Originally Posted by User Name
Define $f(x) = 2 [e^{x/2} + e^{-x/2}]$.
Then your function is $f\left(\frac{x}{c}\right)$ and so the effect of positive $c$ is to dilate in the horizontal direction by a factor of $c$.