Question

who can help me to determine the domain of a functions?

Answer 1

i think anyone could. are they rational functions?

Answer 2

post your questions

Answer 3

This is completely off topic, but Level 76?? WHOA??

Answer 4

\[\chi have -1,0,1,2\]

Answer 5

Set of allowable inputs to a function, start with that...

Answer 6

What does "X have -1,0,1,2" mean?

Answer 7

Often they describe the domain (inputs) as a set X of values and the outputs or range as a set Y.

Answer 8

Anybody home?

Answer 9

yes..

Answer 10

but why there's some range and domain has it answer like this:\[y \ge0\]

Answer 11

Say I said to you that the domain was all the numbers bigger or equal to 0.

Then I could write x>= 0, it's just a short way of writing a description.

All those x's (inputs) will produce values of y and maybe (depends on the function) that set is the same as the inputs and I can write y>=0 for the range.