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## Homework Statement

F=<xy, x-y> and C is the triangle joining (1,0), (0,1) and (-1,0) in the clockwise direction.

## Homework Equations

How do I have the second part of this curve?

## The Attempt at a Solution

Apparently, there should only be a sum of two integrals. So I got that curve one could be

[tex]C_1: x=t, y=0, -1≤ t ≤ 1[/tex]

But I have no idea how to find [tex]C_2[/tex]. There's no other way, that I see, that you can take such that you keep x constant and let y vary.