Question: 3. In class we learned that (-1)n x2n cos x n= 0 (2n)! (a) Use this to find the Taylor series at x = 0

3. In class we learned that (-1)n x2n cos x n= 0 (2n)! (a) Use this to find the Taylor series at x = 0 of f(x) = cos x2. (b) Find the interval of convergence of the series in part (a)

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