HomeWork Question~~~~~~~~~~~~~~~~~~~~~~~~~Please Help~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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f x f n an! n 0 2n e n!n 0 x a 2 3 x 3 n n f n a 2n e2 a , a 3 2nn x 3n 0 n ! e6 a)f x x 2 2 n 1 x 1 xsin x x 1 2n 1! 2n 1! 4 2 4 n n 0 n 0 b)f x nx xx2 21 x n 0 n 1 xn 0 2 n 1 n 4 n 6