Using dsolve for numerical integration of differential ...

Along with the differential equations we must provide the initial conditions. Let's put the pendulum at an initial angle of = /2, this is horizontal, and let it go from rest, so 0=0. Lets also set a few parameters. Let's take g = 9.8 m/s2 and L =1.0 m. Matlab’s tour de force is its ODE solver. ................
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