The figure shows level curves of a function f(x, y). (a) Draw gradient vectors at P and Q. Is Vf(P) longer than, shorter than, or the same length as Vf(Q)? ? (b) If C is the line segment from P to Q, then S Vf.dr = (c) If C is any piecewise-smooth path from P to T to Q, then for Vf.dr = (d) If C is any piecewise-smooth path from S to P, then Jo Vf.dr = (e) If C is any piecewise-smooth closed path from P to Q to T to S to P, then √vf.dr = 0 y (Click on granh t 17 14 11 X

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