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Mathematics
Problem
Let
f
(
x
)
=
k
x
4
−
2
x
3
+
7
x
−
5
f(x)=k x^{4}-2x^{3}+7x-5
f
(
x
)
=
k
x
4
−
2
x
3
+
7
x
−
5
, where
k
k
k
is a constant. If
f
′
′
(
1
)
=
0
f''(1)=0
f
′′
(
1
)
=
0
, find the value of
k
k
k
. a)
2
2
2
b)
1
1
1
c)
−
1
4
-\dfrac{1}{4}
−
4
1
d)
−
1
-1
−
1
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