Ex 5.5, 3 - Differentiate (log x)cos x - Class 12 CBSE NCERT - Logarithmic Differentiation - Type 1

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  1. Chapter 5 Class 12 Continuity and Differentiability
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Ex 5.5, 3 (Method 1) Differentiate the functions in, log cos Let = log cos Taking log both sides log = log log cos log = cos . log log Differentiating both sides . . . . log = cos . log log log = cos . log log log = cos . log log 1 . = cos . log log 1 = cos . log log + log log . cos 1 = sin . log log + 1 log . log . cos 1 = sin . log log + 1 log 1 . cos 1 = sin . log log + cos log = sin . log log + cos log Putting values of = . +

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.