You can run it through Excel or a lot of calculators and they'll do sine regressions. I used my ol' TI-92 and got:
For the second part of the problem, set the equation equal to 0.5 and solve for x.
Here is a picture of my question, just click on it to enlarge it. I need the equation to be sin. Here is an example from another question of the format of the formula.
5sin30(x-1)+7
And here is the question
This is extremely urgent, please help out.
Thanks alot.
Are you sure you're not in degrees. When I use .5, I get .439
.45 is what is in the chart. That is very close. Looking again, I do not see anything wrong. The data matches very close.
Using my equation we get
0 is -.003
.5 is .44
.75 is .61
1.25 is .83
2.25 is .61
3 is -.003
I do not know how you got -21 for x=.5
Those look close to me.
I suppose I am misunderstanding.
If you have something like , then the period is and the phase shift is . The amplitude is |a|