Write the Word or Phrase That Best Completes Each Statement

Short Answer

Write the word or phrase that best completes each statement or answers the question.
-f(x) = 2x - 2 is defined on the interval 1,5 . In (a) and (b), approximate the area under f as follows:
(a) Partition 1,5 into four subintervals of equal length and choose u as the left endpoint of each subinterval.
(b) Partition 1,5 into four subintervals of equal length and choose u as the right endpoint of each subinterval.
(c) What is the actual area A?