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Mathematics
Problem
The function
g
(
x
)
=
x
2
/
3
g(x)=x^{2/3}
g
(
x
)
=
x
2/3
is defined for all real
x
x
x
. In one or two sentences, explain why
g
′
(
0
)
g'(0)
g
′
(
0
)
does not exist.
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