Question

how do i find the finite approximation to estimate the area using the lower sum of 4 rectangles for f(x)= 4-x^2 between x=-2 and x=2?

Answer 1

plug in -2,-1,0,1 for x and add. i think this is how to do it. i never covered this in my calculus classes. we jumped straight into integrals. www.wolframalpha.com is a good website that can usually give you step by step on how to do most math problems