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Thread: General Formula For Variation 2

  1. #1
    Senior Member harpazo's Avatar
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    General Formula For Variation 2

    Write a general formula to describe each variation. Let k be the constant of proportionality for each variation.

    1. T varies jointly with the cube root of x and the square of d.

    T = cuberoot{x}(d^2)k

    2. z varies directly with the sum of the cube of x and the square of y.

    z = (x^3 + y^2)k

    3. The cube of z varies directly with the sum of the squares of x and y.

    z^3 = (x^2 + y^2)k

    Is any of this correct?
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  2. #2
    MHF Contributor
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    Re: General Formula For Variation 2

    Yep all good. Same comment as MarkFL gave, usually k is put at the front of the expression.
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    Senior Member harpazo's Avatar
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    Re: General Formula For Variation 2

    Quote Originally Posted by Debsta View Post
    Yep all good. Same comment as MarkFL gave, usually k is put at the front of the expression.
    For the most part, I did well in Section 2.5 of the Sullivan textbook. We move on to Chapter 3, Section 3.1 or Functions.
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