Answer to Question #331390 in Discrete Mathematics for lady

Discrete Mathematics

Question #331390

"\\forall" x,y "\\in" R, x² +y²=9

Expert's answer

This statement is false. Counterexample: let "x=1, y=2". Both "x,y\\in R". But, "x^2+y^2 = 1+4=5\\ne9".

Answer. The statement is false.

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