Question: In each case explain why f : E2 E2 is not an isometry. (1) f(x,y)=(x2,y2) (2) f(x,y)=(x+y,xy)

In each case explain why f : E2 E2 is not an isometry.

(1) f(x,y)=(x2,y2)

(2) f(x,y)=(x+y,xy)

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