Question:

How do I find the antiderivative of (2pi y^4)/4?

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I know the anti-derivative of y^4 is y^5/5 but how do I perform this for ( 2 pi y^4/4)?

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  1. 2pi is a constant therefore...

    the Integral of 2piy^4/4 is

    (pi*y^5)/10


  2. (2piy^4)/4

    the equation you are looking for can be expressed as

    [x(pi)(y^5)]/z taking the first derivative of this ==>

    5(x)pi(y^4)/z should be equal to 2(pi)(y^4)/4

    [5(x)(pi)(y^4)]/z = [2(pi)(y^4)]/4  simplify the right side

    [5(x)(pi)(y^4)]/z = [(pi)(y^4)]/2 divide both sides by pi and y^4 ==>

    [5(x)]/z = 1/2 simplify 10x = z ==> if x = 1 z = 10 replace in the equation

    [x(pi)(y^5)]/z ==> (1)(pi)(y^5)/10 ==>

    pi(y^5)/10 the answer

    the first derivative is 5(pi)(y^4)/10 = pi(y^4)/2 multiply the top and bottom by 2 ==> (2piy^4)/4 the value you were given.

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