In Exercises 31 40 find the Taylor series centered at c and the interval on which the expansion is valid 31 33 34 3 1 32 f x e x c 1 f x 37 f x c 1 1 1 x c 5 f x sin x c f x 1 2 35 f x x 3x 1 36 f x x 3x 1 E G x2 C 4 2 38 f x x c 4 c 2 c 0