contestada

Provide an example of a function that does not have an inverse function. How do you prove that it is not a function?

Respuesta :

zizi56

Answer:

f(x) = x^2 is a classic example

f( 3 ) = 9 and

f( -3 ) = 9, but

f^(-1)[9] is undefined because the result can be 3 and -3