Recent content by prinnori

θ(t)= A ( cos ωt + ε cos 3ωt ); d²θ/dt² = -ω² A (cos ωt + 9ε cos 3ωt); θ³(t) = A³ ( cos³ωt + 3ε cos²ωt cos 3ωt + 3ε² cos ωt cos²3ωt + ε³ cos³ 3ωt ) = = ... = = A³/4 [ 3cos ωt (2ε²+ε+1) + cos 3ωt (3ε²+6ε+1) + 3cos 5ωt (ε²+ε) + 3ε² cos 7ωt + ε³ cos 9ωt] Replacing all this in the...

Homework Statement I attached a file containing the problem statement, because it is impossible to reproduce all the symbols. Homework Equations Also in the attached file. The Attempt at a Solution I tried to simply substitute theta but it turned out to be very messy...