1. Math
2. Calculus
3. given is the function fx 4x 2x a...

# Question: given is the function fx 4x 2x a...

###### Question details
Given is the function f(x) = 4^x - 2^x.
a) Calculate the area enclosed by the graph of the function, x-axis and the line x = -k where k is a positive constant.
b) What is the limit of the area as k approaches infinity?