18. Let g( x ) be the inverse function of the function f ( x )= xex , where x ≥ 0, i.e., g(f(x)) = x, and f(g(x)) = x for x ≥ 0. Which of the following items is the value of the integral 5ee33e40d718b.jpg?
(A) e – 1
(B) 1
(C) e
(D) 1 + ln 2
(E) e 2 – 1

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統計： A(0), B(0), C(1), D(0), E(0) #2348353