Since the given function is a quotient, we must use the quotient rule:
dx |
|
= | (ex+e-x)2 |
|||
= |
|
(since the derivative of e-x is -e-x) | ||
= |
|
(expanding the terms) | ||
= |
|
(because the other terms cancel) | ||
= |
|
(because exe-x = 1) |
Just close this window to return to the tutorial.