Calculate the period and amplitude of the function.

Question

anonymous · Answer

attachment

yuki · Answer

are the curves meant to touch the x-axis? 
also, are the waves the same height ?

anonymous · Answer

yes to both questions. sorry i just drew it quickly.

yuki · Answer

The amplitude is the easy one.
Notice that the wave goes up and down periodically ?
The distance from the top of the wave to the bottom of
the wave is always constant.
For those, the distance from the average height of the 
wave is the amplitude.

so it is the distance between the top and bottom divided
by 2.

anonymous · Answer

oh okay

yuki · Answer

Now for the period, I need a biiit more better graph to say 100%,
but is looks like in one period, you can graph the shape from 
-pi to pi.

Am I correct ?
Can you repeatedly graph the same shape using that interval ?

yuki · Answer

If it is, then the period is just 2pi.