" If "y=A cos nx+B sin nx," then "(d^(2)y)/(dx^(2))

cos mx = sin nx

If y=A cos nx+B sin nx, show that (d^(2)y)/(dx^(2))+n^(2)y=0

If y=A cos nx+B sin nx, show that(d^(2)y)/(dx^(2))+n^(2)y=0

Find the second order derivative of the following functions y = A cos n x + B sin nx, Prove that (d^2y)/(dx^2) + n^2 y = 0

If x=a cos nt-b sin nt, then (d^(2)x)/(dt^(2)) is n^(2)x( b) -n^(2)x( c) nx( d )nx

If x=a cos nt-b sin nt, then (d^(2)x)/(dt^(2)) is n^(2)x(b)-n^(2)x(c)-nx(d)nx

If y=e^(nx) then (d^(2)y)/(dx^(2)) is

If y=x^(n)log nx.,then (d^(2)y)/(dx^(2))=

If y=x^(m)e^(nx) then (d^(2)y)/(dx^(2)) is

If y = sin^(n) x cos nx, " then" (dy)/(dx) is