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Mathematics
Problem
The answers are in Chapter 24. 4. Evaluate
∫
cos
(
1
x
)
x
2
d
x
\int \frac{\cos \left(\frac{1}{x}\right)}{x^{2}} d x
∫
x
2
c
o
s
(
x
1
)
d
x
. (A)
sin
(
1
x
)
x
+
C
\frac{\sin \left(\frac{1}{x}\right)}{x}+C
x
s
i
n
(
x
1
)
+
C
(B)
−
sin
(
1
x
)
x
+
C
\frac{-\sin \left(\frac{1}{x}\right)}{x}+C
x
−
s
i
n
(
x
1
)
+
C
(C)
sin
(
1
x
)
+
C
\quad \sin \left(\frac{1}{x}\right)+C
sin
(
x
1
)
+
C
(D)
−
sin
(
1
x
)
+
C
-\sin \left(\frac{1}{x}\right)+C
−
sin
(
x
1
)
+
C
(A)
sin
(
1
x
)
x
+
C
\frac{\sin \left(\frac{1}{x}\right)}{x}+C
x
s
i
n
(
x
1
)
+
C
(B)
−
sin
(
1
x
)
x
+
C
\frac{-\sin \left(\frac{1}{x}\right)}{x}+C
x
−
s
i
n
(
x
1
)
+
C
(C)
sin
(
1
x
)
+
C
\quad \sin \left(\frac{1}{x}\right)+C
sin
(
x
1
)
+
C
(D)
−
sin
(
1
x
)
+
C
-\sin \left(\frac{1}{x}\right)+C
−
sin
(
x
1
)
+
C
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