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cos (
) cos (
)
x – a
x – b
Choose the correct answer in Exercises 23 and 24 23 2
2
2
2
sin
cos
is equal to
sin
xcos
x dx
x
x
−
∫
(A) tan x + cot x + C
(B) tan x + cosec x + C
(C) – tan x + cot x + C
(D) tan x + sec x + C
24 (12
)
equals
cos (
)
x
x
e
x
+e xdx
∫
(A) – cot (exx) + C
(B) tan (xex) + C
(C) tan (ex) + C
(D) cot (ex) + C
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