264 a 576 b 264 a 24 11 b e divide both sides by b a

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264 a =− 576 b 264 →a = 24 11 b e. Divide both sides by b:  a = 24 11 b→ a b = 24 11 f. Orthogonal gradient vector:   ± 24, ± 11  (when  a  is -,  will be +, and when is +,  will be -). For this part (part 2), we will use  24,11 . g. Find unit vector:  1 ( 24 ) 2 + 11 2 = 1 697 24,11 24 697 , 11 697 h. Directional derivative using the gradient vector from part 1 and the unit vector from part 2: 264, 576 24 697 , 11 697 264 24 697 + ( 576 ) 11 697 6336 697 6336 697 = 0 Thus, the direction vector will be 24 697 , 11 697  in which the  directional derivative  f(x, y)  at  P 0  is equal to zero.
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  • Summer '17
  • directional derivative of the vector

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