2. For the same problem, use Lagrange multipliers to maximize the volume V ryz under the constraint r2+y²+z = 1.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section: Chapter Questions
Problem 12T
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Please solve Q2
1. A rectangular box is placed in the first octant, with one corner at the origin and the three adjacent faces in the
coordinate planes. The opposite point P(r, y, z) is constrained to lie on the paraboloid a? + y? + z = 1. Which P
gives the box of greatest volume?
(a) Show that this problem leads to maximizing
f(r, y, 2) = ry – ry – ry
-
(b) Find the critical point of f in the first octant.
(c) Identity the nature of the critical point using the second derivative test and find the maximum of f in the first
octant.
2. For the same problem, use Lagrange multipliers to maximize the volume V = ryz under the constraint a2+y2+z 1.
Transcribed Image Text:1. A rectangular box is placed in the first octant, with one corner at the origin and the three adjacent faces in the coordinate planes. The opposite point P(r, y, z) is constrained to lie on the paraboloid a? + y? + z = 1. Which P gives the box of greatest volume? (a) Show that this problem leads to maximizing f(r, y, 2) = ry – ry – ry - (b) Find the critical point of f in the first octant. (c) Identity the nature of the critical point using the second derivative test and find the maximum of f in the first octant. 2. For the same problem, use Lagrange multipliers to maximize the volume V = ryz under the constraint a2+y2+z 1.
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