Question

Let A = R-{3} and B = R- {1} consider
the function.f: A B defined by f(x) =x-2÷x-3
show that f is a
one-one function.​

Answer 1

Answer:

x can never be equal to 3, as it will make denominator 0. so A is satisfied.

Now since, x can never be equal to 3, it wont be even equal to 1, bcoz as per the numerator, 3-2= 1.

hope you understood