It is a simple and straight question if one knows modulus arithmetic, but if they didn't know that beforehand, it indeed would have required some hard thinking to crack the code. That really shows just how strong of a tool modulus arithmetic is.
@noskillman6507 Жыл бұрын
From the equation you get that y^2 = -1 mod 11 and with properties of the Legendre symbol you quickly find that -1 is a non quadratic residue mod 11 : (-1/11) = -1 because 11 = 3 mod 4
@gaemario8581 Жыл бұрын
taking the equation mod 11 you find that y^2 is -1 mod 11 which is impossible since 11 is a prime that is 3 mod 4.
@barrianic4 Жыл бұрын
i was doing y^2 mod 11
@realcirno1750 Жыл бұрын
i dont really see why the theorem you stated was necessary🤔i must admit it is a quality theorem nonetheless