00:01
Hello, let's have a look at the question.
00:03
So now for the a part we have been given that yx equals to c1 e to the power x plus c2 e to the power minus 2x is the solution for the given differential equation or not.
00:18
So here we have to verify that.
00:20
So first of all let us calculate y dash x which will be equals to c1 e to the power x minus 2 .7.
00:29
E to the power x minus 2.
00:30
2c2e to the power minus 2 x let this be the first equation now let us calculate y double dash x so this will be equals to c1 e to the power x plus force c2 e to the power minus 2 x now let this be the second equation so now let us take the differential equation that is y double dash plus y dash minus 2y and put the values here for the solution that we got.
01:05
So y double dash is c1 e to the power x plus 4c2e to the power minus 2x plus y dash which has the value c1 e to the power x minus 2c2 e to the power minus 2 x minus 2 minus 2 minus 2.
01:24
Minus 2 into y that is c1 e to the power x and minus 2 c2 to e to the power minus 2 x.
01:34
So here we will get that y double dash plus y dash minus 2y is equals to 2c1 e to the power x minus 2c1 e to the power x plus 4c2 e to the power minus 2x and minus 4 c2 e to the power minus 2 x.
01:56
So therefore here we will get that y double dash plus y minus 2y is equals to 0...