Question

Find the domain of the function f (x) =x/x^2 + 1.

Answer 1

x not equal 0

Answer 2

(you can not divide by 0) Domain of x is x=/= 0

Answer 3

so (-inf,0) u (0,inf)

is that it?

Answer 4

it is if that plus 1 is not in the denominator

Answer 5

if so.. you have to solve the denominator for x values that make the D=0. and exclude them

Answer 6

Good point. Jinnie you have the right answer unless you forgot to put some parentheses

Answer 7

thankx lumenaire, i posted the question exactly how it was written so i think its right

Answer 8

Use the appropriate sum or difference identity to find the exact value of cos (7pi/12)

Answer 9

the entire number line is its domain