First you need to determine the roots of the function, so you know what bounds to use.
use a graphing utility to graph f(x)=x^4-6x^3+11x^2-6x. then use the upper sums to approximate the area of the region in the first quadrant is bounded by f and the x axis using 4 subintervals. round your answer to three decimals
I have no idea how to do this and its due wednesday, we've never even talked about it in class