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CBSE Class 12 Math 2009 Solved Paper
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Question : 11 of 29
Marks:
+1,
-0
Differentiate the following function w.r.t. x: y =
Solution:
y = Let u = and v = Now y = u + v = ... (i) Consider u = Taking logarithms on both the sides, we have, logu = xlog (sin x) Differentiating with respect to x, we have, = log (sin x) + . cos x ⇒ = (log (sin x) + x cot x) ... (ii) Consider v = = × ... (iii) From (i), (ii) and (iii) We get , = (log (sinx) + x cot x) +
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