calculus

If f(x)=8x +2 find the exact area under the curve from x=0 to x=2.

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  1. You do not need Calculus for this question, since this results in a trapezoid.
    The two parallel sides have lengths of 2 and 18 and the distance between them is 2

    Area = 2(2+18)/2 = 20

    if you insist on Calculus

    Area = [integral](8x+2)dx from 0 to 2
    = |4x^2 + 2x| from 0 to 2
    = 16 + 4 - 0 = 20

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    posted by Reiny

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