Prove or disprove that f is a quotient mapping.(adsbygoogle = window.adsbygoogle || []).push({});

f:R^3\{(x1,x2,x3):x1=0}--->R^2 defined by

(x1,x2,x3)|->(x2/x1,x3/x1)

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# How to verify if a mapping is quotient.

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