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**How do you set up an integral integrating two functions within a domain??**

## Homework Statement

I have to integrate (2 + x + y) within the domain that is the area between 0 and 1 and (x+y<=1)

I know how to integrate well, I think it's a double integral but I'm not really sure what the range is so not sure what to integrate from and to? Any help will be much appreciated. Thanks. I haven't done this kind of work since 1996 so it's been a while!