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Use implicit differentiation to differentiate the equation.?

(3x-2y)^6 = 3y^4 + 9

Please show work/steps along with the answer.

2 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    Chain rule....

    6(3x - 2y)^5(3 - 2(dy/dx)) = 12y³(dy/dx)

    18(3x - 2y)^5 - 12(3x - 2y)^5(dy/dx) = 12y³(dy/dx)

    18(3x - 2y)^5 = 12y³(dy/dx) + 12(3x - 2y)^5(dy/dx)

    18(3x - 2y)^5 = (dy/dx)(12y³ + 12(3x - 2y)^5)

    dy/dx = 18(3x - 2y)^5/(12y³ + 12(3x - 2y)^5)

    = 18(3x - 2y)^5/(12(y³ + (3x - 2y)^5))

    = 3(3x - 2y)^5/(2(y³ + (3x - 2y)^5))

    I hope this helps!

    Source(s): Knowledge
  • Ron W
    Lv 7
    1 decade ago

    (3x - 2y)^6 = 3y^4 + 9

    Differentiate both sides with respect to x:

    6(3x - 2y)^5 (3 - 2(dy/dx)) = 12y^3(dy/dx)

    Solve for (dy/dx):

    18(3x - 2y)^5 - [12(3x - 2y)^5](dy/dx) = 12y^3(dy/dx)

    18(3x - 2y)^5 = [12(3x - 2y)^5](dy/dx) + 12y^3(dy/dx)

    18(3x - 2y)^5 = [12(3x - 2y)^5 + 12y^3](dy/dx)

    [18(3x - 2y)^5] / [12(3x - 2y)^5 + 12y^3] = dy/dx

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