WEBVTT
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everyone. Today we are going to solve all the
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number of four. Their function is equal to X
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cubed virus to four plus expressed for my cube They
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die cart Oh, by the six at one comma
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mark, we need to find directional derivative. The
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US ethical toe effects it x Come away into a
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plus f y in the X gonna lie in the
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big So FX will be called toe three X square
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by rest to four plus for X cube by cube
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cause Bye bye six plus for X cube by cube
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Trust three express to four y squared window sign by
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by six. So we will get like one by
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two Window rule three three X Square virus to four
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plus four x Cuba Wise Square plus for X Cuba
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, like Cuba plus three existed for by square.
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So if it's all we will get half into a
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road train Do three plus four plus four plus three
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which is Edgardo half into 73 plus seven. Thank
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you