00:01
We are given here the differential equation as d2y by dt square plus y is equal to sin of t.
00:09
Ok, now we can take here laplace, so taking laplace transformation, ok, so what we will get here, it will be like l of d square y divided by dt square plus l of y, it can be written as yt as well and here l of sin t.
00:37
So now we will write here that, here see, l of, it can be written as like l of y double dash of t, ok, plus it can be written as like l of yt is equal to here l of sin t.
00:55
So now we can let here, let's let this equation first.
01:00
So basically here we are supposed to know that l y double dash is nothing but equal to s square times y of s minus s times y of 0 then minus y dash of 0.
01:16
It is particular l of y double dash then plus l of yt, l of yt is nothing but equivalent to y of s, ok, and then is equal to l of sin t.
01:29
What is l of sin t? it is like 1 divided by s square plus 1, 1 divided by s square plus 1.
01:39
Now here we can apply those things like s square times y of s minus s times of y0.
01:48
So since we were given here that y0 is equal to, what we were given, y0 is equal to 1 and y dash 0 is equal to 0...