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Mathematics
Mathematics
Problem
If
k
k
k
is a real constant such that
lim
x
→
2
x
2
+
k
x
+
1
x
−
1
=
11
\displaystyle \lim_{x\to 2} \dfrac{x^{2}+kx+1}{x-1}=11
x
→
2
lim
x
−
1
x
2
+
k
x
+
1
=
11
, then
k
k
k
equals a)
2
2
2
b)
7
7
7
c)
3
3
3
d)
4
4
4
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