hi there.....
I was just reviewing my class notes and i just cant understand how i solved my problems via general method.....i know and understand this method very well, but i just have missed something,that i cane even understand my own notes for a couple of alike problems.....
problem: (D^2 + a^2)y = sec(aX)
to be solved via general method of differential equations..
now there comes somewhere
P.I=sec(aX)/(D^2+a^2)
= sec(aX)/(D-ia)(D+ia) <<<<--------------------- what is this??
{i =iota}
or if anyone knows anyother way to solve it by general method,...please do help
thanks already
I was just reviewing my class notes and i just cant understand how i solved my problems via general method.....i know and understand this method very well, but i just have missed something,that i cane even understand my own notes for a couple of alike problems.....
problem: (D^2 + a^2)y = sec(aX)
to be solved via general method of differential equations..
now there comes somewhere
P.I=sec(aX)/(D^2+a^2)
= sec(aX)/(D-ia)(D+ia) <<<<--------------------- what is this??
{i =iota}
or if anyone knows anyother way to solve it by general method,...please do help
thanks already