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Thread: Three Forms of Variation

  1. #1
    Senior Member harpazo's Avatar
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    Three Forms of Variation

    There are 3 forms of variation:

    1. Direct Variation

    2. Inverse Variation

    3. Joint Variation

    Can someone explain, in easy terms, the basic difference between the three forms of variation? Can someone provide an example for each?
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  2. #2
    Forum Admin topsquark's Avatar
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    Re: Three Forms of Variation

    Quote Originally Posted by harpazo View Post
    There are 3 forms of variation:

    1. Direct Variation

    2. Inverse Variation

    3. Joint Variation

    Can someone explain, in easy terms, the basic difference between the three forms of variation? Can someone provide an example for each?
    Google them.

    1. y = kx. y varies directly with x.

    2. y = k/x. y varies inversely with x.

    3. z = kxy. z varies jointly with x and y.
    We might also have z = kx/y, z = ky/x, z = k/(xy). But the one I listed is jointly varying.

    -Dan
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    Senior Member harpazo's Avatar
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    Re: Three Forms of Variation

    Quote Originally Posted by topsquark View Post
    Google them.

    1. y = kx. y varies directly with x.

    2. y = k/x. y varies inversely with x.

    3. z = kxy. z varies jointly with x and y.
    We might also have z = kx/y, z = ky/x, z = k/(xy). But the one I listed is jointly varying.

    -Dan
    I am in Section 2.5 in the textbook. I will post variation problems only if I get stuck.
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