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Truncation method on Adams-Bashforth method

I need to use the truncation method to show how the 3-step Adams-Bashforth method is third order but I don't know where to start. I'm not even sure what the "truncation method" is
Could anyone help me out with the first step, or explain what the truncation method is? ImageUploadedByStudent Room1477595934.856105.jpg
Original post by Bruce Harrisface
I need to use the truncation method to show how the 3-step Adams-Bashforth method is third order but I don't know where to start. I'm not even sure what the "truncation method" is
Could anyone help me out with the first step, or explain what the truncation method is? ImageUploadedByStudent Room1477595934.856105.jpg


I must admit, that I don't really have a clue about what is going on here - but the Wikipedia page on linear multi-step models has a section that appears to cover how to check the order of an Adams-Bashforth method.

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