Determine Amplitude/period/phase shift /graph function. over 1 period.
Indicate xintercepts and coordinates of Hi/low points on graph.

y = cos (2x - pi/3) +1
y = A ( Bx - C )
so Amplitude is 1
Period: 2pi/B-- 2pi/2 = Pi

Okay is my phase shift right?
Phaseshift = C/B
pi
----
3
--------------- = pi/6?
2

Question

Determine Amplitude/period/phase shift /graph function.  over 1 period. 
Indicate xintercepts and coordinates of Hi/low points on graph.

y = cos (2x - pi/3) +1
y = A    ( Bx -   C )
so Amplitude is 1
Period: 2pi/B--> 2pi/2 = Pi

Okay is my phase shift right?
     Phaseshift = C/B
                         pi
                        ---- 
                          3
               ---------------               = pi/6?
                         2

anonymous · Answer

looks good to me
i never remember the formula, so i set $2x-\frac{\pi}{3}=0$ and solve for $x$

anonymous · Answer

this also help me remember whether the graph has moved left or right. in this case you get $x=\frac{\pi}{6}$ so it is shifted to the right

lilsis76 · Answer

oh!, okay so since it was positive it goes right, right? 
I thought if if was negative it goes right?? i am still confused on how they shift.

lilsis76 · Answer

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