1. If x = a cos θ, y = b sin θ, find
2. If x = a(t - sin t), y = a(1 - cos t), find
4. Differentiatewith respect to x[sup]2[/sup].
8. If y = a cos 5x + b sin 5x, show that
9. If y = a cos(log x) + b sin (log x), show that
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