122KiB, 638x479, computational-method-to-solve-the-partial-differential-equations-pdes-4-638.jpg View SameGoogleiqdbSauceNAO Anonymous Wed 05 Aug 13:37:02 2020 No.11976784 ViewReplyOriginalReport Quoted By: >>11976796 >>11976812 Prove that every positive integer is the sum of at most 3 triangular numbers (proven by gauss :) don't cheat :) And don't feel bad if you can't get it, Gauss didn't prove this until he turned 6