Question

Check Wheather the given function is onto f(x)= (3x^2+3x-4) / (3 +3x-4x^2)

Answer 1

I know for a function to be onto the Range should be Equal to Co-Domain,but how do i figure out co-domain is it simply the set of all real numbers ?

Answer 2

I think you should find the inverse of the function

Answer 3

Wat is the deal with inverse ?

Answer 4

to find range of the function?

Answer 5

Ok...1st How do u Figure out Co-Domain

Answer 6

factor out the numerator and denominator

Answer 7

\[
f(x)=\frac{3x^2+3x-4}{3+3x-4x^2}
\]

Answer 8

Codomain has to be given. If not assume it to be R (all real numbers. )
I suppose you can find the range yourself?