Let $f ( x , y , z ) = x ^ { 2 } + y ^ { 2 } + z ^ { 2 }$

question 94

True/False

Let $f ( x , y , z ) = x ^ { 2 } + y ^ { 2 } + z ^ { 2 }$ .Then $\text { grad } f ( 0,0,0 ) = \overrightarrow { 0 }$ .

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The act of approving or sanctioning an agreement or treaty that makes it officially valid.

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An action taken by an individual or entity without permission or authority, potentially leading to legal consequences or invalidation of the act.

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