If y=A cos(log x)+B sin(log x), prove that x^2 (d^2 y)/(dx^2 )+x dy/dx+y=0

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Important Questions Differentiation Class 12

Q1. If y=tanx+secx, prove that (d^2 y)/(dx^2 )=(cos x)/((1-sin x)^2 )

Question 2 :If y=A cos(log x)+B sin(log x), prove that x^2 (d^2 y)/(dx^2 )+x dy/dx+y=0