Techniques of Differentiation - Higher Derivatives by Implicit Differentiation

Techniques of Differentiation - Higher Derivatives by Implicit Differentiation

Differentiate the following equations with respect to \(x\):

  1. \(x\frac{\mathrm{d}y}{\mathrm{d}x} = \cos(xy) + \left(\frac{\mathrm{d}y}{\mathrm{d}x}\right)^{2}\)
  2. \(y\left(\frac{\mathrm{d}y}{\mathrm{d}x}\right)^{2} = \cos(xy) + \tan z\)

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Answer:(i) \(xy''+y'=-\sin(xy)(xy'+y)+2y'y''\) (ii) \(2yy'y''+(y')^3=-\sin(xy)(xy'+y)+\sec^2z\frac{\mathrm dz}{\mathrm dx}\)

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