If y = cos² 3x, then =? dy dx dy dx O dy dx dy dx = 6 cos 3x = = -2 cos 3x -6 sin(3x) cos(3x)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.5: Product-to-sum And Sum-to-product Formulas
Problem 33E
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If y
O
O
-
dx
dx
dx
dy
dx
cos² 3x, then =?
dy
dx
=
- 6 cos 3x
=
-2 cos 3x
-6 sin (3x) cos(3x)
= 2 sin 3x cos 3x
Transcribed Image Text:If y O O - dx dx dx dy dx cos² 3x, then =? dy dx = - 6 cos 3x = -2 cos 3x -6 sin (3x) cos(3x) = 2 sin 3x cos 3x
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