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Mathematics
Problem
Determine the positive constant
k
k
k
such that
d
d
x
[
cot
(
k
x
)
]
=
−
8
csc
2
(
k
x
)
.
\frac{d}{dx}\bigl[\cot(kx)\bigr]=-8\csc^{2}(kx).
d
x
d
[
cot
(
k
x
)
]
=
−
8
csc
2
(
k
x
)
.
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