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Mathematics
Mathematics
Problem
Let
2
x
+
3
(
x
2
+
1
)
2
=
A
x
+
B
x
2
+
1
+
C
x
+
D
(
x
2
+
1
)
2
.
\frac{2x+3}{(x^{2}+1)^{2}}= \frac{Ax+B}{x^{2}+1}+\frac{Cx+D}{(x^{2}+1)^{2}}.
(
x
2
+
1
)
2
2
x
+
3
=
x
2
+
1
A
x
+
B
+
(
x
2
+
1
)
2
C
x
+
D
.
Find the value of
C
C
C
. a) 0 b) 1 c) 3 d) 2
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