a Show that (sin(m + n)x + sin(m – n)x) b Hence, without using the product rule, differentiate sin mx cos nx. c Simplify } (cos (m + n)x + cos(m = sin mx cos nx . n)x), and hence differentiate cos mx cos nx.
a Show that (sin(m + n)x + sin(m – n)x) b Hence, without using the product rule, differentiate sin mx cos nx. c Simplify } (cos (m + n)x + cos(m = sin mx cos nx . n)x), and hence differentiate cos mx cos nx.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 79E
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