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Hiya, I've just done a line integral question, and the final part of the question is, "by applying a standard test, determine whether the value of the line integral depends on the path followed between the given initial and final points." The only standard test, I know, is dq/dx, and dp/dy to find if its a perfect differential. I somehow doubt thats the correct standard test . Does it mean, to try calculating it again, but with different forumla?