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Math Help - Partial Fraction Differentiation

  1. #1
    Junior Member
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    Partial Fraction Differentiation

    i have the fraction

    f(x) = (x-8)/(x+2)(2x-1)

    part (a) was to to express that into a partial fraction n i got

    2/(x+2) - 3/(2x-1)

    part (b) says
    Find f'(0)

    my question for part (b) is do i differentiate the original fraction or the partial fraction i found in part (a)???
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  2. #2
    Super Member wingless's Avatar
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    f(x) = \frac{x-8}{(x+2)(2x-1)}

    f(x) = \frac{2}{x+2} - \frac{3}{2x-1}

    They are different expressions of the same function. It doesn't matter which one you differentiate, you'll get the same result. Try and see
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