00:01
Okay, to solve this, we've got to first solve m squared minus 5m plus 4 equals 0.
00:07
So that's m minus 4, m minus 1.
00:13
So m equals 4 or 1.
00:15
So y sub c is c1, e to the 4x plus c to e to the x.
00:23
All right, now we want to guess a solution.
00:26
So just look at this to start with.
00:28
So our first guess is a, e to the x.
00:30
Well, that won't work because that's the.
00:32
This.
00:34
So we need to multiply it by x.
00:37
So we get a x, e to the x, and that's okay.
00:41
That should work.
00:44
All right.
00:45
So y prime, first derivative of the second plus the second derivative of the first...