00:01
If you see the amplitude is 2 because if this is going from minus 2 to plus 2, so if you write the amplitude comes out to be 2.
00:12
Fine.
00:13
And now if you see it is starting with a positive sign.
00:15
So it will be positive times of some function.
00:19
Now remember that starting with a 2, this is a cost function.
00:24
Okay.
00:24
It is a twice of cost function.
00:27
But if you think of the period, so it is from 0 to 8.
00:30
Okay.
00:31
The real cost function.
00:32
So, it is a real cost function.
00:32
So, it is a that is cross theta function, the theta is varying between 0 to 2 pi.
00:39
But here if you see it is varying from 0 to 8...