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Math Help - Calculus and proving inequalities

  1. #1
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    Calculus and proving inequalities

    Hi guys,

    I am a bit stuck on a certain part of a maths problem. I've done (a) and (b) already but I can't seem to get (c) which involves proving.

    Thanks in advance
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  2. #2
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    Re: Calculus and proving inequalities

    And what did you get for a) and b) ?
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  3. #3
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    Re: Calculus and proving inequalities

    Basically I proved the equations shown in a) and b).

    a) is easy, just use speed = distance/time and sub in the values.

    for b) i differentiated T(x) and then subbed x into T(x) to get the equation shown in b).

    If you want me to elaborate further, I guess I can take a picture of my working out to show you :/
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