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I wanted to calculate the period of a pendulum withould the small angle approximation. I carried out the calculation and came out with a rather ugly integration which was the same as the one wikipedia had so I assume I did it right. The answer I got was:

T=4[root of(L/2g)]*integral of{1/[root of(cos@-cos@initial)] from 0 to @initial}

However when I performed a numerical integration with my calculator, the answer I got was completely absurd. Any help?

T=4[root of(L/2g)]*integral of{1/[root of(cos@-cos@initial)] from 0 to @initial}

However when I performed a numerical integration with my calculator, the answer I got was completely absurd. Any help?

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