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Mathematics
Mathematics
Problem
Consider
h
(
x
)
=
9
x
2
+
k
x
−
3
x
h(x)=\sqrt{9x^{2}+kx}-3x
h
(
x
)
=
9
x
2
+
k
x
−
3
x
. Determine the value of
k
k
k
for which
lim
x
→
∞
h
(
x
)
=
7
\displaystyle \lim_{x\to\infty} h(x)=7
x
→
∞
lim
h
(
x
)
=
7
. a)
21
21
21
b)
63
63
63
c)
42
42
42
d)
84
84
84
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