Evaluate 
1
2 3
0
x
e
dx
−
∫
 as a limit of a sum Choose the correct answers in Exercises 41 to 44 41 x
x
dx
e
+e−
∫
 is equal to
(A) tan–1 (ex) + C
(B) tan–1 (e–x) + C
(C) log (ex – e–x) + C
(D) log (ex + e–x) + C
42