Question

Calculate the left Riemann sum for the given function over the given interval, using the given value of n. (When rounding, round your answer to four decimal places.)
f(x) = 1 − 3x over [−1, 1], n = 4

Answer 1

divide the interval \([-1,1]\) in to four equal parts
what are the parts?

Answer 2

I know Im going to have to multiply 2/4 by the four parts but how do I find the parts

Answer 3

the length of your interval is 2
if you divide that in to four parts, each will have length \(\frac{1}{2}\)

Answer 4

divide that interval in to 4 equal parts, each of length \(\frac{1}{2}\)

Answer 5

well actually, if you divide it in to four equal parts, the intervals will have to have length one half

Answer 6

do I need to plug the parts into the equation or something?

Answer 7

no
the first step is to divide that interval up in to four pieces
what will that look like?