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Mathematics
Mathematics
Problem
Consider the function
h
(
x
)
=
x
2
+
4
x
h(x)=\dfrac{x^{2}+4}{x}
h
(
x
)
=
x
x
2
+
4
for
x
>
0
x>0
x
>
0
. At which
x
x
x
does
h
h
h
attain a local minimum? a)
x
=
4
x=4
x
=
4
b)
x
=
2
x=2
x
=
2
c)
x
=
1
2
x=\dfrac{1}{2}
x
=
2
1
d)
h
h
h
has no local minimum for
x
>
0
x>0
x
>
0
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