Question

find the domain of rational function.
f(y) y+2 /y^2-2y

Answer 1

The denominator y^2 - 2y CANNOT equal 0 because the denominator will be undefined at 0.

so the question is when is y^2 - 2y = 0?

well, factor, we get

y(y - 2) = 0

so y = 0 and y = 2

so the domain is all real numbers EXCEPT 0 and 2

Answer 2

In my first sentence, I meant to say that the fraction is undefined if the denominator is 0.

Answer 3

how would you write this in interval notation

Answer 4

any

Answer 5

any thoughts