(a) Estimate the area under the graph of f(x) = 20 x from x = 0 to x = 4 using four approximating rectangles and right endpoints. (Round your answers to four decimal places.)

Question

(a) Estimate the area under the graph of f(x) = 20x

from x = 0 to x = 4 using four approximating rectangles and right endpoints. (Round your answers to four decimal places.)

Answer 1

A = 1(20) + 1(28.28427) + 1(34.64102) + 1(40)

A = 20 + 28.28427 + 34.64102 + 40

A = 122.9253

You'll notice this is an overestimate and is not really that good of an estimate because of it.