Techniques of Differentiation - Derivatives of Trigonometric Functions

Techniques of Differentiation - Derivatives of Trigonometric Functions

Find the derivative of each of the following:

  1. \(y = \sin^3(2x^2 - \pi)\)
  2. \(y = \mathrm{cosec}^3(\pi x^4 + 1) - 3x^5\)
  3. \(\mathrm{f}(x) = \sin\left(ex + \frac{\pi}{4}\right) + \cos(2x^3 - 5x)\)

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Answer:(a) \(12x\cos(2x^2-\pi)\sin^2(2x^2-\pi)\) (b) \(-12\pi x^3\csc^4(\pi x^4+1)\cos(\pi x^4+1)-15x^4\) (c) \(e\cos(ex+\frac{\pi}{4})-(6x^2-5)\sin(2x^3-5x)\)

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