TITLE: Riemann Sum Integration problem
QUESTION [1 upvotes]: I do not understand how to start this problem. I know I have to integrate from 0 to 1 and that n=3 but thats all. Hints/clues appreciated!

REPLY [1 votes]: Hint - Check the different sums given in (a)-(e), and take into account that:
== The function must be evaluated in points of the given subintervals $\,[x_i,x_{i+1}]\subset [0,1]\,$ , and way more important:
== Every value of the function must be multiplied by the correspoding subinterval's length!
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