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Mathematics
Mathematics
Problem
Describe what the value of
d
d
x
(
tan
x
)
\frac{d}{dx}(\tan x)
d
x
d
(
tan
x
)
at
x
=
π
4
x=\dfrac{\pi}{4}
x
=
4
π
tells you about the graph of
y
=
tan
x
y=\tan x
y
=
tan
x
at that point.
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