19. Find the terms of the Maclaurin series for 5e9d4fa2d9f21.jpg , as far as the term in x3 . 


(A) 1 - x + x2 -x3

(B) 1 + x - 1/2 x2 + 1/3 x3

(C) 1 - x + 3/2 x2 - 5/2 x3

(D) 1 + x + 3x2 + 5 x3

(E) 1 - x + 3/2 x2 - 7/3 x3

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統計： A(0), B(0), C(1), D(0), E(0) #2264883