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Math Help - sketching

  1. #1
    Senior Member furor celtica's Avatar
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    sketching

    how am i supposed to sketch modulus of f(x) = x(x-1)(x-2) ?
    the modulus part i know how to do, but how am i supposed to graph this cubic function? i dont know how to do that, i wasnt taught how, i just learned the basic shape with two turning points. is there a catch somewhere? i know how to make transformations from a more elementary function.
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  2. #2
    Flow Master
    mr fantastic's Avatar
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    Quote Originally Posted by furor celtica View Post
    how am i supposed to sketch modulus of f(x) = x(x-1)(x-2) ?
    the modulus part i know how to do, but how am i supposed to graph this cubic function? i dont know how to do that, i wasnt taught how, i just learned the basic shape with two turning points. is there a catch somewhere? i know how to make transformations from a more elementary function.
    It's a positive cubic and obviously has x-intercepts at x = 0, 1 and 2. So sketching the shape should be straightforward.

    To find the turning points you have to use calculus, which I assume you haven't been taught yet ...? (In which case there's nothing you can do to get them).
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  3. #3
    Senior Member furor celtica's Avatar
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    sure i know how to differentiate
    thanks
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