Question

HELPPP MEEE PLEASEE!!!!!

Answer 1

For this case we have that, by definition, the domain of a function is given by all the values for which the function is defined.

Having said that, we have the following function:

$r (x) = \frac {2x} {x-1}$

It is not defined when the denominator is equal to 0. That is:

$x-1 = 0\\x = 0 + 1\\x = 1$

Thus, the domain of r (x) is given by all real numbers except 1.

Answer:

all real numbers except 1.

Option A