Can someone help me with this problem, i want to understand where the k variable comes from

Question

anonymous · Answer

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anonymous · Answer

You should probably talk with someone or look up sums online with pictures and graphs.  Whatever we can explain in this text document won't be thorough, nor will it probably help you in the long run.  Sorry

anonymous · Answer

i understand everything else in this problem, all i want to know is why that variable k comes inot play what does it represent

anonymous · Answer

it's just a place holder for your sigma value.  You can put in any other variable.

anonymous · Answer

oh, wow that is right, k /n would be and right hand value of the subinterval

anonymous · Answer

and (k-1)/n would be or correspond to any left end point of the subtierval

anonymous · Answer

hey, daniel# tanks alot