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Mathematics
Problem
Write an explicit limit expression for
f
′
(
a
)
f'(a)
f
′
(
a
)
when
f
(
x
)
=
x
r
f(x)=x^{r}
f
(
x
)
=
x
r
, where
r
r
r
is a real constant and
a
>
0
a>0
a
>
0
.
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