Question

how to graph : y=2cos½(x+π/2)

Answer 1

ill help

Answer 2

y=2sin(x-pi/2)find the amplitude, phas shift, and period for the graph of each function.
y=cos(2x-pi/4)
y=-4sin(2x/3+pi/6)
y= 5/4cos(3x-2pi)
y= 2 tan(2x-pi/4)
..
standard forms used:
y=Asin(Bx-C),A=amplitude, Period=2pi/B, Phase shift=C/B
y=Acos(Bx-C),A=amplitude, Period=2pi/B, Phase shift=C/B
y=tan(Bx-C),A=amplitude, Period=pi/B, Phase shift=C/B
..
y=2sin(x-pi/2)
B=1
Amplitude=2
Period=2pi/1=2pi
x-pi/2=0
x=p/2
Phase Shift=(pi/2)to the right
..
y=cos(2x-pi/4)=
B=2
Amplitude=1
Period=2pi/2=pi
2x-pi/4=0
2x=pi/4
x=pi/8

Answer 3

medal plz