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October 12th, 2010, 03:50 AM  #1 
Newbie Joined: Oct 2010 Posts: 2 Thanks: 0  Simple pendulum equation turned into a different form
So I know that the simple pendulum has equation: I'm basically trying to use Runge Kutta to solve this equation, came across an example from a book where the author has changed the above to numerical form which results: I've tried use substituting but cannot resolve to the above equation which the book provides. Any pointers? Thanks 

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equation, form, pendulum, simple, turned 
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