We would be glad to help you, but we can't see where you are going wrong on this if you do not show your work.
yes that is the function.
This is what I have done so far...
a)
split up f(x) into the intervals [0, 1], [1, 2], [2, 3], [3, 4], and used right endpoints, 1, 2, 3, 4 as the heights of the rectangles.
A ≈ 1*2√1 + 1*2√2 + 1*2√3 + 1*2√4
= 6 + 2√2 + 2√3
≈ 12.293
b)
A ≈ 1*2√0 + 1*2√1 + 1*2√2 + 1*2√3
= 2 + 2√2 + 2√3
≈ 8.293
My online hw keeps marking these answers wrong. What am I doing wrong?