Consider the function f(x, y) = 7/x² + y² at the point P = (4, – 3). (a) Find the gradient of f and also evaluate the gradient at P = (4, – 3): V f(r, y) = (| V f(4, – 3) = ( (b) Find a vector i that points in the direction in which f increases most rapidly at P = (4, – 3): [Any positive scalar multiple of the answer shown in the key is acceptable.] (c) Find the rate of change in this direction, that is find the directional derivative in the direction of largest increase: Dúf(4, – 3) =

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Consider the function f(x, y) = 7/x² + y² at the point P = (4, – 3).
(a) Find the gradient of f and also evaluate the gradient at P = (4, – 3):
V f(x, y) = (|
V f(4, – 3) =
(b) Find a vector ở that points in the direction in which f increases most rapidly
at P = (4, – 3):
-
v =
[Any positive scalar multiple of the answer shown in the key is acceptable.]
(c) Find the rate of change in this direction, that is find the directional derivative in the direction of
largest increase:
Düf(4, – 3) :
Transcribed Image Text:Consider the function f(x, y) = 7/x² + y² at the point P = (4, – 3). (a) Find the gradient of f and also evaluate the gradient at P = (4, – 3): V f(x, y) = (| V f(4, – 3) = (b) Find a vector ở that points in the direction in which f increases most rapidly at P = (4, – 3): - v = [Any positive scalar multiple of the answer shown in the key is acceptable.] (c) Find the rate of change in this direction, that is find the directional derivative in the direction of largest increase: Düf(4, – 3) :
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