Use a graph of the vector field F and the curve C to guess whether the line
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Use a graph of the vector field F and the curve C to guess whether the line integral of F over C is positive, negative, or zero. Then evaluate the line integral.
F(x, y) = x/√x2 + y2 i + y/√x2 + y2 j, C is the parabola y = 1 + x2 from (-1, 2) to (1, 2)
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