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(Solved): The Taylor series of cos(x) centred at a=0 is given by n=0(1)n(2n)!x2n It converges ...
The Taylor series of cos(x) centred at a=0 is given by ?n=0??(?1)n(2n)!x2n? It converges to cos(x) for all x. Use this to find the exact value of: ?n=0??(?1)n(2n)!?2n?=