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I'm so confused by this simple PDE. Any ELI5 explanations? (lemmy.dbzer0.com)

submitted 1 year ago* (last edited 1 year ago) by dysprosium@lemmy.dbzer0.com to c/math@lemmy.ml

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Then I am stuck. I think the provided answer contains an error. But even if they are right, why does this last step equal f(x,y) + g(y) ????

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[–] LGTM@discuss.tchncs.de 1 points 11 months ago* (last edited 11 months ago) (1 children)

What do you want to learn PDEs for? It's not my strong point, but I've heard high praise for Partial Differential Equations by Stanley J. Farlow. I found it useful in my undergrad, else I think I could have died in analytical mechanics

[–] dysprosium@lemmy.dbzer0.com 1 points 10 months ago

thanks I'll check it out. It's for physics