Q. 17

If 𝒴 = ea cos-1x, - 1 ≤ x ≤ 1, show that (1 - x2) - x- a2𝒴 = 0.

Answer :

Taking log on both sides


log y = acos-1x log e


log y = acos-1x


Differentiating with respect to x




Differentiating with respect to x






Hence Proved


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