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If y = (tan⁻¹x)², show that (x² + 1)² d²y/dx² + 2x(x² + 1) dy/dx = 2.
The equation of the path traced by a roller-coaster is given by the polynomial f(x) = a(x + 9)(x + 1)(x − 3). If the roller-coaster crosses y-axis at a point (0, −1), answer the following :
Differentiate sec⁻¹(1/√(1 − x²)) w.r.t. sin⁻¹(2x√(1 − x²)).
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