# Ex 5.7, 10 - Chapter 5 Class 12 Continuity and Differentiability

Last updated at Sept. 17, 2019 by Teachoo

Last updated at Sept. 17, 2019 by Teachoo

Transcript

Ex 5.7, 10 Find the second order derivatives of the function sin ( log ) Let y = sin ( log ) Differentiating . . . . = ( sin ( log ) ) = cos (log ) . ( log ) = cos (log ) . 1 = cos (log ) Again Differentiating . . . = cos (log ) 2 2 = cos (log ) 2 2 = (cos (log )) . . cos (log ) 2 2 2 = sin log . log . 1 . cos (log ) 2 2 2 = sin log . 1 . cos (log ) 2 2 2 = sin log cos (log ) 2 = + ( )

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