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show that the function f:R to R defined as f of x =(x square) is neither one one nor onto

Posted by Anakha Jagadeesh 5 years, 5 months ago

CBSE > Class 12 > Mathematics

1 answers

Ayush Vishwakarma?? 5 years, 5 months ago

F(x1)=f(x2).. x1^2=x2^2...x1=+or- x2.... Since x1 has not unique image it is many one not one -one .. in the case of onto f ( x) is equal to y and x square is equal to y and X equal to plus minus under root y this is not on 2 because the root never in negative...

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