Pre-Calculus: how do i solve this?

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y=2cos1/2 (x- π)-2

so far i have...
period=2 π
horizontal shift= π

i need to find
Amplitude (A)
Veritical Shift (VS)

2007-09-23 06:33:54 · 3 answers · asked by Alisha H 1 in Science & Mathematics ➔ Mathematics

Amplitude =2
w=1/2 =2pi/T so T = 4pi (period)
horizontal shift y=0
cos 1/2(x-pi)=1 so 1/2(x-pi)=pi/2 ( first value)
so x=2pi
Vertical shift
x=0 y= -2

2007-09-23 06:46:01 · answer #1 · answered by santmann2002 7 · 0⤊ 0⤋

Amplitude = 2 (the multiplier of the cosine function)\
Vertical Shift = -2 (the non-trig portion)

2007-09-23 06:42:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋

http://www.analyzemath.com/trigonometry

2007-09-23 06:44:34 · answer #3 · answered by tito_swave 4 · 0⤊ 0⤋