How many numbers exist or lie between 1 and 2?

Between 0 and 1 there is 12, between 1 and 2 there is 112=3/2, and so on.

Step-by-step explanation:

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C. f(x) = x+1/x-1

Step-by-step explanation:

y = (x+1)/(x-1)

Interchange the x and the y

x = (y+1)/(y-1)

Now, we will solve for y

x(y-1) = y+1

xy - x = y+1

y(x-1) = x+1

y = (x+1)/(x-1)

f^-1(x) = (x+1)/(x-1)

f(x) = f^-1(x)

I hope I helped!

Let me know if you need anything else!

~ Zoe