February 21, 2017

Homework Help: Math: Calculus

Posted by REALLY NEED HELP!!!! on Friday, November 12, 2010 at 7:02pm.

Estimate the area under the graph of f(x)=x^2+2x from x = 4 to x = 10 using 3 approximating rectangles and left endpoints.

I got 290.25 as my answer but it's wrong. Would someone explain to me how to answer this question.

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