1.

Which option (s) is/are ture ?

Answer»

`f :R to R, f (X) =e ^(|x|)-e ^(-x)` is many-one into FUNCTION
`f : R to R, f (x)=2x+|sin x|` is one-one onto
`f:R to R, f (x)=(x^(2) +4x+30)/( x ^(2) -8x+18)` is many-one onto
`f :R to R, f (x) =(2x ^(2) -x+5)/( 7x^(2) +2x+10)` is many-one into

Answer :A::B::D


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