Q.13 If x= Acos4t + Bsin 4t, then d2x dt2 a)-16x b) 16 x c)x d) -

If x= A cos 4t + B sin 4t , then (d^(2)x)/(dt^(2))=

If x Aos 4t+Bsin4t then (d^(2)x)/(dt^(2)) =

If x=A cos 4t+B sin4t, then (d^(2)x)/(dt^(2)) is equal to

If x=A cos 4t+B sin4t, then (d^(2)x)/(dt^(2)) is equal to

If x^2=t^2+! then find (d^2x)/(dt^2)

If x = e ^(2t ) cos, 3t, then (d ^(2) x)/(dt ^(2))at t = pi //2 is

If int(cos4x+1)/(cotx-tanx)dx = Acos4x+B ,t h e n (a) A=-1/8 (b) B=1/2 (c) A=-1/4 (d) None of this

If intsin^(4)xdx=ax+bsin2x+c sin 4x+d, then (a, b, c)-=

If intcos^4x/(sin^2x)dx = Acotx+ Bsin2x+C/2x+D , then find the value of B and C

2cosx-cos3x-cos5x= ............... A) 16 cos ^(3) x sin ^(2) x B) 16 sin^(2) x cos ^(2) x C) 4 cos ^(2) x sin ^(2) x D) 4 sin ^(2) x cos ^(2)x