from x = -1 to x = 5, first using 6 approximating rectangles and right endpoints, and then improving your estimate using 12 approximating rectangles and right endpoints.
for 12 shouldnt it be f(5)+f4.5+f4+f3.5+f3+f2.5+f2+f1.5+f1+f.5+f0+f-.5?

Question

from x = -1 to x = 5, first using 6 approximating rectangles and right endpoints, and then improving your estimate using 12 approximating rectangles and right endpoints. 
for 12 shouldnt it be f(5)+f4.5+f4+f3.5+f3+f2.5+f2+f1.5+f1+f.5+f0+f-.5?

anonymous · Answer

for right endpoints 792 and left I get 540 but are wrong....

anonymous · Answer

function is 2x^3+3

anonymous · Answer

wish there was a reimann sum calculator..lol

anonymous · Answer

Also, not sure how to do midpoints