Question

If

f X Y : − be a function defined by y = f (x) such that f is both one-one and onto

then there exists a unique function

g Y X : − such that for each

y Y g y x  = , ( )

iff

y f x = ( )

. The

function g so defined is called the inverse of f and denoted as

( ) ( )

1

f x g x −

= .

If

f R R : →

be a invertible function such that

( ) ( )

1

f x g x −

=

and

1 2 x x,

are two distinct roots of

the equation

f x g x ( ) = ( )

. Then value of

( 2 1 ) ( )

2 1

g x g x

x x

−

−

Options:

(a) must be −1

(b) must be 1

(c) may be 3

(d) cannot determine​

Answer 1

Answer:

I think option C!!!!!!!!!

Step-by-step explanation:

C