3x-1 a) The function y=- has a horizontal asymptote at y = 3. x+2 b) cos x cos 4x-sin.xsin 4x= cos(-3x) c) 2 sin(5x) cos(5.x) = sin(10x) d) cos² (20)-sin² (20) = cos(0)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section: Chapter Questions
Problem 15T
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B) 1) Decide whether the following statements are true or false
3x-1
a) The function y=- has a horizontal asymptote at y = 3.
x+2
b) cos x cos 4x-sin.xsin 4.x = cos(-3x)
c) 2 sin(5x) cos(5x) = sin(10x)
d) cos² (20)-sin² (20)= cos(0)
Transcribed Image Text:3x-1 a) The function y=- has a horizontal asymptote at y = 3. x+2 b) cos x cos 4x-sin.xsin 4.x = cos(-3x) c) 2 sin(5x) cos(5x) = sin(10x) d) cos² (20)-sin² (20)= cos(0)
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