Find  dy / dx if y = sin ^1 (6x-4 _/1-4x^2/5)
If y = (x _/x^2 a^2 )^n prove that dy/dx = ny/ _/x^2 a^2
 Prove that 1/2 <x <1,then: cis ^1x cos^1(x/2 _/3-3x^2/2) =py/3
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