1.

If Nis the setof alllnaturalnumbersthenwhichof the followingis true

Answer»

`f(x)= 3X -2` DOESNOT mapN to N
`f(x)=x^2 +1` does notmap N to N
`x to x^2 - 3x +1`doesnot mapN to N
`x to( x (x+1))/( 2) ` does not mapN to N

Answer :C


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