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Mathematics
Mathematics
Problem
In one or two sentences, explain why the infinitesimal change in arc length along the graph of
y
=
f
(
x
)
y=f(x)
y
=
f
(
x
)
can be expressed using both
d
x
dx
d
x
and the derivative
f
′
(
x
)
f'(x)
f
′
(
x
)
.
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