00:01
I have a question.
00:02
It says sinusoidal function has been graphed.
00:05
We have to find period amplitude and equation of the midline.
00:09
First of all, let us draw a rough sketch of the graph.
00:16
We can see that the highest point is 2, lowest point is minus 4.
00:24
So equation of midline will be y equal to highest minus lowest divided by 2 minus 2 by 2 which is minus 1.
00:42
So equation of the midline is y equal to minus 1.
00:48
Let us draw y equal to minus 1.
00:52
This is the midline y equal to minus 1.
00:57
Now if we try and draw the graph y equal to minus 1.
01:07
Okay.
01:10
So the graph looks like here like this and this is starting point of the graph will be equal to 1, minus 1, 1, minus 1 because this is 1 and for the one period x i will be taking over here.
01:44
The end point of the graph for one period will be 9, minus 1, 9, minus 1 as this is 9...