Question

What is the solution to a differential equation which models a simple harmonic movement, with an angular frequency w=(k/m)^(1/2), fase angle=f, and amplitude=A

Answer 1

Help me out please, answer choices are:
a) x = A t sin(w t + f)
b) x = A sin(w t + f)
c) x = e^(A t) sin(w t + f)
d) x = A sin(w t) cos(t - f)