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Suppose that over a certain region of space the electrical potential V is given by V (x, y, z) =
x
2y + yz + xyz. [10 Marks]
(a) Find the rate of change of the potential at the point A(1, 2, 3) in the direction of the
vector d = i + j 2k.
(b) In which direction does V change most rapidly at A?
(c) What is the maximum rate of change at A?
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Reply 2
Original post by tayyy
Suppose that over a certain region of space the electrical potential V is given by V (x, y, z) =
x
2y + yz + xyz. [10 Marks]
(a) Find the rate of change of the potential at the point A(1, 2, 3) in the direction of the
vector d = i + j 2k.
(b) In which direction does V change most rapidly at A?
(c) What is the maximum rate of change at A?


Look in your notes for directional derivatives

it will also be more helpful and faster for you (no need to type) to post a photo of the problem/problem sheet

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