Is #f(x)=(x-2)(x+5)(x+2)# increasing or decreasing at #x=-3#?
1 Answer
Apr 11, 2018
Explanation:
We are given
Now the function is increasing at a given point, if
Here
and
at
=
Hence
(see graph not drawn to scale - shrunk alon
graph{(x-2)(x+5)(x+2) [-10, 10, -40, 40]}