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March 26, 2017

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Calculate the area above y=x^2 and to the right of x=y^2 using integrals.

  • Math - ,

    y = x^2 is 0 at x = 0, .25 at x = 1/2 and 1 at x = 1
    y = +/- sqrt x is 0 at x=0, .707 at x = 1/2 and 1 at x = 1
    sketch that and you will see that what you want is the integral from x = 0 to x = 1 of x^(1/2)dx minus the integral over the same interval of x^2 dx

  • Math - ,

    The two cuves intersect at (x=0, y=0) and (x=1, y=1). The area between them is
    (Integral of) x^1/2 - x^2 dx
    0->1

    Evaluate x^(3/2)/(3/2) - x^3/3.
    at the two limits and take the difference

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