Let f(x) = 20 (?1)k x2k (2k)! k=0 . Which of the following is equivalent to t f(x) dx 0 ?

Let f(x) O O O = M: M: Me Mc k=0 k=0 k=0 20 (-1)k x2k (2k)! k=0 (1)k x2k+1 (2k+1)! k=0 (1)k t2k-1 (2k-1)! (1)k tk+1 (2k+1)! (1)k+1 +2k+1 (2k+1)! Which of the following is equivalent to [ F(x) f(x) dx?