1.

f : R^(+) to R^(+): f(x)= e^(x)is

Answer»

many - oneand into
many - oneandonto
one - oneandinto
one - oneand onto

Solution :`F(x_(1)) =f(x_(2)) RARR e^(x_(1)) =e^(x_(2)) rArr x_(1) =x_(2)` . Sof isone-one
For each `x in R^(+) EE" log" x in R^(+) s.t f(log x )=x`
`So , FIN onto.


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