What is the general solution to y′′+k2y=0y'' + k^2 y = 0y′′+k2y=0?
y=Acos(kx)+Bsin(kx)y = A \cos(kx) + B \sin(kx)y=Acos(kx)+Bsin(kx)
y=Aekx+Be−kxy = A e^{kx} + B e^{-kx}y=Aekx+Be−kx
y=(A+Bx)ekxy = (A+Bx)e^{kx}y=(A+Bx)ekx
None