Which dot product below is equal to the rate of change of the function f (x, y)
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![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/06/667bbdd1c9a68_553667bbdd1a7d4c.jpg)
![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/06/667bbdd247f07_554667bbdd21e60d.jpg)
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