The derivative of (x, y, z) at a point P is greatest in the direction of v
Question:
The derivative of ƒ(x, y, z) at a point P is greatest in the direction of v = i + j - k. In this direction, the value of the derivative is 2√3.
a. What is ∇ƒ at P ? Give reasons for your answer.
b. What is the derivative of ƒ at P in the direction of i + j ?
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Related Book For
Thomas Calculus Early Transcendentals
ISBN: 9780321884077
13th Edition
Authors: Joel R Hass, Christopher E Heil, Maurice D Weir
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