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Mathematics
Problem
For
f
(
x
)
=
x
2
+
1
2
x
−
1
f(x)=\dfrac{x^{2}+1}{2x-1}
f
(
x
)
=
2
x
−
1
x
2
+
1
, calculate
f
′
(
1
)
f'(1)
f
′
(
1
)
. a)
2
2
2
b)
−
2
-2
−
2
c)
0
0
0
d)
1
1
1
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