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April 20, 2014

Homework Help: Pre-Calculus-check answers

Posted by Lucy on Saturday, August 30, 2008 at 8:38pm.

State the period and phase shift of the function y=-4tan(1/2x + 3pi/8)

a) 2pi, -3pi/4
b) pi, 3pi/8
c) 2pi, 3pi/8
d) pi, -3pi/8

Answer: d

2) What is the equation for the inverse of y=cos x+3:
a) y=Arccos(x+3)
b) y=Arccos x-3
c) y=Arccos x+3
d) y=Arccos(x-3)

Answer:d

Thanks for your help

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