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Mathematics
Problem
For answers and explanations, turn to Chapter 19. 27. Find
d
r
d
θ
\frac{d r}{d \theta}
d
θ
d
r
if
r
=
sec
θ
tan
2
θ
r=\sec \theta \tan 2 \theta
r
=
sec
θ
tan
2
θ
.
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