maths question on discriminants and range (1 Viewer)

[zod1329]

Could anyone explain to me how to do this question

Use the discriminant (X^2) + 2 - y(x - 1) to show that the range of ((X^2) + 2)/(x - 1) is equal to (- ∞, 2 - 2*((3)^(1/2)))) U (2 + 2*((3)^(1/2)))), ∞)

note

2 - 2*((3)^(1/2)))) = 2 - the square root of 3

U = union

 

[jannny]

which mathxxxx is this??

 

[Omium]

Too much brackets :S

 

[A High Way Man]

yeah im not going to read that, this forum should have inbuilt TeX