# What is the derivative of #f(x) = (−7 x^2 − 5)^8 * (2 x^2 − 9)^9#?

##### 1 Answer

Jul 29, 2015

The given function is the product of two functions and the derivative may be computed using he product rule.

#### Explanation:

Let,

Thus,

Now,

Now,

Also,

Now do rearrange the terms. We already know