Is #f(x)=(1-e^x)/(1-x^2)# increasing or decreasing at #x=2#?
1 Answer
Jun 28, 2016
the first derivative is negative. The function is decreasing.
Explanation:
The first derivative of f is
its sign is the same as the sign of its numerator which is
It is negative thus the function is decreasing at
graph{(1-e^x)/(1-x^2) [-10, 10, -5, 5]}
