SOLUTION: Determine the phase shift for y=1/2cos(5piex-3)

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Question 882509: Determine the phase shift for y=1/2cos(5piex-3)
Answer by Edwin McCravy(20081) About Me  (Show Source):
You can put this solution on YOUR website!
y = a·sin[b(x+c)] + d  or y = a·cos[b(x+c)] + d   

amplitude = |a|
period = 

Factor out 5pi



compare to

y = a·cos[b(x+c)] + d  

matrix%281%2C4%2C++++a=1%2F2%2C+b=5pi%2C+c=3%2F5pi%2C+d=0+%29

amplitude = |a| = abs%281%2F2%29%7C%7C%7C+=+%7B%7B%7B1%2F2
period = 2pi%2Fb = %282pi%29%2F%285pi%29=2%2F5
phase shift = |c| = abs%28-3%2F%285pi%29%29 right since negative
vertical shift = |d| = 0 so no vertical shift

Edwin