# P,Q,R notation in Vector Fields

## Homework Statement

Vector field is given by:
[PLAIN]http://tutorial.math.lamar.edu/Classes/CalcIII/LineIntegralsVectorFields_files/eq0001M.gif[PLAIN]http://tutorial.math.lamar.edu/Classes/CalcIII/LineIntegralsVectorFields_files/empty.gif [Broken]
I'm just reviewing line integrals of vector fields and I was wondering what P, Q and R represent?

## The Attempt at a Solution

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