1) Find all 1

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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1) Find all local maxima, local minima, and saddle points for the function given below. Write
answers in the form (x, y, z). Show work for all six steps, see the notes for 8.3.
f (x, y) = 2x² + 3y? – xª – yª
• Step 1 Calculate fa and fy
Step 2 Solve the system of equations fa = 0, fy = 0, if there is more than one solution label
critical points (x, y) with A,B,C, etc.
• Step 3 Calculate fææ, fæy, fyæ, fyy
• Step 4 Calculate D =
Jyx
fex fyy – fæy fyæ for each critical point
|fyæ fyy|
fry
-
• Step 5 Classify each critical point as a local minimum, local maximum, or saddle point and v
each point as (x, y, z), where z = f(x,y)
• Step 6 Graph the function and all critical points (x,y,z) in http://www.geogebra.org/3d
way that clearly shows the behavior near each local max, min, saddle point. You may nee
rotate the graph or zoom in to certain regions so that the behavior of the graph is visible ard
each critical point (multiple plots may be necessary).
Transcribed Image Text:1) Find all local maxima, local minima, and saddle points for the function given below. Write answers in the form (x, y, z). Show work for all six steps, see the notes for 8.3. f (x, y) = 2x² + 3y? – xª – yª • Step 1 Calculate fa and fy Step 2 Solve the system of equations fa = 0, fy = 0, if there is more than one solution label critical points (x, y) with A,B,C, etc. • Step 3 Calculate fææ, fæy, fyæ, fyy • Step 4 Calculate D = Jyx fex fyy – fæy fyæ for each critical point |fyæ fyy| fry - • Step 5 Classify each critical point as a local minimum, local maximum, or saddle point and v each point as (x, y, z), where z = f(x,y) • Step 6 Graph the function and all critical points (x,y,z) in http://www.geogebra.org/3d way that clearly shows the behavior near each local max, min, saddle point. You may nee rotate the graph or zoom in to certain regions so that the behavior of the graph is visible ard each critical point (multiple plots may be necessary).
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