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4 November, 12:03

How do you implicitly differentiate: sqrt (xy) = x^2y+1

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  1. 4 November, 13:29
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    Implicit expression refers to equation that are not strictly expressed in terms of y and x separately. In this case, the derivative of expression

    sqrt (xy) = x^2y+1 is

    sqrt x * 0.5 y ^-0.5 dy + sqrt y * 0.5 x ^-0.5 dx = x^2 dy + 2xy dx

    dy (x^2 - 0.5 (x/y) ^0.5) = dx (2xy - 0.5 (y / x) ^0.5)

    dy/dx = (2xy - 0.5 (y/x) ^0.5) / (x^2 - 0.5 (x/y) ^0.5)
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