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Is this true or false? Please write the calculation process. Thanks
Consider Vf(,y, n terrs of a new coordinate system Let the postion vector defining some contiuous path as a function of the a
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▽f(x, y,2) - 2. Od JI Sine vi Sine Cose一马。 るf d2 SIno 02 7 O 05) t k af a2 02 sha h

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