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You are standing above the point (4,5) on the surface ?=20−(?2+3?2). (a) In which direction should...

You are standing above the point (4,5) on the surface ?=20−(?2+3?2). (a) In which direction should you walk to descend fastest? (Give your answer as a unit 2-vector.) direction = (b) If you start to move in this direction, what is the slope of your path? slope =

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