Variation of parameters
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I love the internet, without it I would fail every exam.
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You can use this to prove that paradox-free time travel is possible.
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@DrChrisTisdell crap..my bad lol my mind was wondering. I see cosx derivation is -sinx :P
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so in this case the fundemental solutin is given D.R. is it true.
bigaaal3marzooq 2 months ago
@bigaaal3marzooq Yes it is common with many examples involving the method of variation of parameters that the solution to the homogenous problem is given.
DrChrisTisdell 2 months ago
You forgot to put minus sign at ln(cosx) :)
moneytalk123 4 months ago
@moneytalk123 What I have written is correct. Can you see why there should be no minus sign?
DrChrisTisdell 4 months ago 5