### Author Topic: Variation of Parameter for higher order eqautions  (Read 387 times)

#### Sophie Liao

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##### Variation of Parameter for higher order eqautions
« on: November 18, 2020, 12:26:03 PM »
Since we have learned the variation of parameter method for second and third order equation, I just want to confirm whether my idea is correct or not. For fourth order eqatuion or higher, should we compute the det of 4 by 4 matrix or even higher to use this method? Is there any general theorem for this method?

#### shiyuancao

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##### Re: Variation of Parameter for higher order eqautions
« Reply #1 on: November 18, 2020, 09:34:38 PM »
I think your idea is correct and it's unmistakable to apply the same principle when solving higher order equations