Consider the function f(x,y) = x² - 4y² -9 and the point (-1,1). a. Find the unit vectors that give the direction of steepest ascent and steepest descent at P. b. Find a vector that points in a direction of no change in the function at P. a. What is the unit vector in the direction of steepest ascent at P? (Type exact answers, using radicals as needed.) What is the unit vector in the direction of steepest descent at P? 10. (Type exact answers, using radicals as needed.) b. Which of the following vectors is in a direction of no change of the function at P? OA. (2,-8) OB. (8,2) OC. (-2,8) D. (8,-2)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 18T
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Consider the function f(x,y) = x² - 4y² - 9 and the point (-1,1).
a. Find the unit vectors that give the direction of steepest ascent and steepest descent at P.
b. Find a vector that points in a direction of no change in the function at P.
a. What is the unit vector in the direction of steepest ascent at P?
(Type exact answers, using radicals as needed.)
What is the unit vector in the direction of steepest descent at P?
(Type exact answers, using radicals as needed.)
b. Which of the following vectors is in a direction of no change of the function at P?
O A. (2,-8)
OB. (8,2)
OC. (-2,8)
D. (8,-2)
Transcribed Image Text:Consider the function f(x,y) = x² - 4y² - 9 and the point (-1,1). a. Find the unit vectors that give the direction of steepest ascent and steepest descent at P. b. Find a vector that points in a direction of no change in the function at P. a. What is the unit vector in the direction of steepest ascent at P? (Type exact answers, using radicals as needed.) What is the unit vector in the direction of steepest descent at P? (Type exact answers, using radicals as needed.) b. Which of the following vectors is in a direction of no change of the function at P? O A. (2,-8) OB. (8,2) OC. (-2,8) D. (8,-2)
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