00:01
Hi, in this question we need to find the fundamental set of solution for the given differential equation.
00:07
First one is 2y double dash minus 5y dash minus 3y is equal to 0.
00:15
First write the characteristic equation for this which would be equal to 2m square minus 5m minus 3 is equal to 0.
00:24
Or we can write it in the factored form where 2m square minus 6m plus 1m minus 3 equal to 0.
00:36
From here we get two factors 2m plus 1 and m minus 3 equal to 0.
00:46
Solving this we get 2 values for ms minus 1 by 2 and 3.
00:50
So the set of solution for this differential equation would be equals to c1, e raised 2 part 3t plus c2, e raise 2 par minus t by 2.
01:06
Now solving the second differential equation, we are given with y triple dash plus 3y double dash minus 4y is equal to 0.
01:18
Again write the characteristic equation first, which is mq plus 3m square minus 4 equal to 0.
01:28
By hidden trial, we can say that m equals to 1 and m equals to minus 2 will substituting this value and it will get satisfied.
01:40
So the factors of this equation could be written as m minus 1 times m plus 2, who, square is equal to 0.
01:52
So we get the solution as am is equal to 1 or minus 2 and minus 2...