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x, y Cn x y 0
 

Summary:  Һ
޹ к x, y Cn

|x + y|
2
= |x|
2
+ |y|
2

׺ x y 0
y x ׵
|x + y|
2
= (x + y) (x + y) = x x + x y + y x + y y = |x|
2
+ |y|
2

A Ckn

  

Source: goston, Istvn - Institute of Mathematics, Etvs Lornd University

 

Collections: Mathematics