consider the pendulum example 1.10.3 with length of 1 m

consider the pendulum example 1.10.3 with length of 1 m an initial conditions of θ0 =π/10 rad and ý θ 0 = 0. compare the difference between the response of the linear version of the pendulum equation (i.e. with sin(θ) = θ) and the response of the nonlinear version of the pendulum equation by plotting the response of both for four periods.