#Is this a valid proof?
8 messages · Page 1 of 1 (latest)
No
py being an integer is not sufficient for there to be a solution
Also py is given to be an integer in the problem because y must be an integer, so most of your text is redundant
you didn't prove that there exists a py, you proved that if py exists then it is an integer
yes
so 4py-3 must be a perfect square
so you let 4py-3=n^2 and eventually rewrite to py = (n^2+3)/4