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Math Help - Double check please

  1. #1
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    Post Double check please

    I think I am getting better at this.

    Differentiate the given function:
    f(x) = 1/4*x^8 - 1/2 *x^6 - x + 2

    f'(x) = 1/4(8x^7) - 1/2(6*x^5) - 1
    f"(x) = 2(x^7) -3(x^5) -1
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  2. #2
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    Quote Originally Posted by becky
    I think I am getting better at this.

    Differentiate the given function:
    f(x) = 1/4*x^8 - 1/2 *x^6 - x + 2

    f'(x) = 1/4(8x^7) - 1/2(6*x^5) - 1
    f"(x) = 2(x^7) -3(x^5) -1
    What happend here?
    f''(x)=2x^7-3x^5-1
    You probably meant to write,
    f'(x)=2x^7-3x^5-1.
    That is the simplification of,
    1/4(8x^7)-1/2(6x^5)-1
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  3. #3
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    Ooops - just a typo

    I meant to write:

    f'(x)
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