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Math Help - Differentiation

  1. #1
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    Differentiation

    Hey, i have 2 questions in which i need done really soon, any help would be great.

    f(x)= (4-x)(5-2x) / x

    You have to find the derivative of that

    F(x)= x+1 /2x⅓

    The same has to be done with that
    Working also has to be showed...
    Thanks in advance for any help given
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  2. #2
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    Quote Originally Posted by Scotland View Post
    f(x)= (4-x)(5-2x) / x
    Work a little this expression

    f(x) = \frac{{(x - 4)(2x - 5)}}{{x^2 }} = \frac{{2x^2 - 13x + 20}}{{x^2 }} = 2 - 13x^{ - 1} + 20x^{ - 2} .

    Now apply the power rule here.

    Quote Originally Posted by Scotland View Post
    You have to find the derivative of that

    F(x)= x+1 /2x⅓
    The same, split the fraction in two pieces, and apply the power rule.
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