Hmmm.. Iam doing CS engg... Its my first year... I never study it. There is no need to. I learn everything from class itself. Iam proud to say iam the topper in my class in computer.
And yes i will do no matter what it takes to master maths.
Hmm. Well, that tells me that you have a rather difficult course load right now, and that it seems like you spend what you think is a disproportionate amount of time on math. It tells me that you are trying hard to learn.
But it does not tell me that you want to learn. How badly do you want to learn math? How willing are you to do whatever it takes?
Very well. Then I will do my part to help you master what you need. However, that also means that I will take you at your word. You will need to do the major part of the work, or you will never master math. Math is not a spectator sport - you have to do it.
What you need to do right now is to substitute u into the original differential equation such that the only variables are u and x. Post # 6 tells you how to do that. You have all the expressions that you need. So what do you get?