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Mathematics
Mathematics
Problem
The second derivative of a function is
f
′
′
(
x
)
=
6
x
f''(x)=6x
f
′′
(
x
)
=
6
x
. Given that
f
′
(
1
)
=
4
f'(1)=4
f
′
(
1
)
=
4
and
f
(
1
)
=
2
f(1)=2
f
(
1
)
=
2
, which of the following is
f
(
x
)
f(x)
f
(
x
)
? a)
x
3
+
2
x
−
1
x^{3}+2x-1
x
3
+
2
x
−
1
b)
x
3
+
x
x^{3}+x
x
3
+
x
c)
x
3
+
1
x^{3}+1
x
3
+
1
d)
x
3
+
x
+
1
x^{3}+x+1
x
3
+
x
+
1
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