Posted by **Mikal** on Wednesday, April 16, 2008 at 9:44am.

Ive been shown that a function can be written like so

f:X->Y,f(x)=rule

where X is the Domain and Y, the co-domain. Firstly, what is the co-domain? Ive tried looking it up but all I get is "the set of which y values fall in".

If that is the case, say for the function, y=1/(x-1), do I write it like this

f:R\{1}->R\{0},f(x)=1/(x-1)

or instead of R\{0}, just

f:R\{1}->R,f(x)=1/(x-1)?? Where R is the set of all real numbers.

And please, if the answer is both, which would be "more right"?

## Answer This Question

## Related Questions

- college algebra - 1.for the given function f&g, find the following and state the...
- Calculus - Explain, using the theorems, why the function is continuous at every ...
- Pre-Calc - Suppose that f has a domain of A and g has a domain of B. (a). What ...
- Calculus - I'm doing graphs/domain/range of basic functions. I have three ...
- calcius - Determine whether the relation represents a function. If it is a ...
- algebra - Find the domain and range of the relation and determine whether it is ...
- algebra - f(x)=v^2+13/v^2-4v-32 Find all numbers that are not in the domain of ...
- math - Find all numbers that are not in the domain of the function. Then give ...
- Math - The above function is given: f(x)= sqrt of (2x-6)/(x-8) - Sarah describes...
- Math - HELP PLEASE!!! I'm having some trouble with this question on my Maths hw...

More Related Questions