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March 18th, 2011, 06:29 AM  #1 
Newbie Joined: Apr 2010 Posts: 11 Thanks: 0  right inverse and left inverse
find the cardinility of all right inverse and left inverse 1) f : R to [0,?) , f(x)=x^2 2)g : [0, ?) to R , g(x) = x^2 3) h: R to R ,h(x)=x^2 4) k : R to R ,k(x) =x^2 

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inverse, left 
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