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Math Help - derivative help

  1. #1
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    derivative help

    v = a(R - r)r^2

    i need some help on finding the derivative...a is a constant
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by mer1988 View Post
    v = a(R - r)r^2

    i need some help on finding the derivative...a is a constant
    multiply out:

    v = a(R - r)r^2

    \Rightarrow v = aRr^2 - ar^3

    now use the power rule
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