Question

Find the upper and lower sums of f(x)=-2x+4 on the interval [0,2] partitioned into four subintervals of equal length.
Note: do not use the summation formulas; calculate the area of the rectangles directly.

Answer 1

Do you know how to divide up the interval from 0 to 2 so that we have 4 rectangles with equal base length?

Answer 2

do you know how to find that number, delta x, so that you have 4 subintervals of equal length?