00:01
Okay, so first thing we're going to do, solve this.
00:03
M squared plus 25 equals 0.
00:07
So m equals plus and minus 5i.
00:13
So y sub c equals c1, e to the 0, because that's like 0 there, 0, t, cosine 5t plus c2, e to the 0 ,0, t, so c2, e to the 0, t, sine 5t.
00:32
So c1, cosine 5t plus c2 sine 5t.
00:41
Okay, then when we plug in t equals pi over 5, we get y equals 3.
00:46
So 3 equals c1 cosine pi plus c2 sine pi...