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CBSE Class 12 Math 2023 Delhi Set 1 Solved Paper

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Question : 27 of 38
Marks: +1, -0
(a) Differentiate sec⁡−1(11−x2)\sec^{-1}\left(\frac{1}{\sqrt{1-x^2}}\right) w.r.t. sin⁡−1(2x1−x2)\sin^{-1}\left(2x\sqrt{1-x^2}\right).
OR
(b) If y=tan⁡x+sec⁡xy=\tan x+\sec x, then prove that d2ydx2=cos⁡x(1−sin⁡x)2\frac{d^2y}{dx^2}=\frac{\cos x}{(1-\sin x)^2}.
Solution:     👈: Video Solution
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