y''+4y=tan2t variation of parameters HELP!!!
@Loser66
again? where is you stuck?
the only problem is that im trying to solve these using cramers rule method. I haven't printed your way as I just ate dinner but I need to solve them with cramers rule. wrongskian method I will learn to check my answers if he doesn't teach us it which he might not cause its a summer course so only 6 weeks long
but trying to solve using cramers rule is being a pain in the butt!
you haven't learned cramers method?
ok, I don't know that method, but I know crammer rule from my linear algebra. Pretend as if I know nothing about your problem, give me the matrix, I can solve it by crammer's rule
my current differential equation lasts 6 weeks, too, friend.
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