in this part we will try to build the intuition of the second part of
Question
In this part, we will try to build the intuition of the second part of the fundamental theorem of calculus. Let f(x) = 3x +1. Write a function g(t) that
corresponds to the area under f from 0 to t. Your answer should include an integral and Write it as \int{lower bound)^[upper bound} [integrand] d].