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Find the maximum and minimum values of the function f(, y) = xy on the ellipse given y? by the equation x² + 1. 4 %3D

Find the maximum and minimum values of the function f(, y) = xy on the ellipse given y? by the equation x² + 1. 4 %3D

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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**Exercise Set** 11. Find an equation of the tangent plane to the surface \( \sqrt{x} + \sqrt{y} + \sqrt{z} = 4 \) at the point \( P(4, 1, 1) \). 12. Find the local maximum and minimum values and saddle point(s) of the function \( f(x, y) = -x^4 + 4xy - 2y^2 + 1 \). 13. Find the maximum value of the function \( f(x, y) = 6 - 4x^2 - y^2 \) subject to the constraint \( 4x + y = 5 \). 14. Find the maximum and minimum values of the function \( f(x, y) = xy \) on the ellipse given by the equation \( x^2 + \frac{y^2}{4} = 1 \).
Transcribed Image Text:**Exercise Set** 11. Find an equation of the tangent plane to the surface \( \sqrt{x} + \sqrt{y} + \sqrt{z} = 4 \) at the point \( P(4, 1, 1) \). 12. Find the local maximum and minimum values and saddle point(s) of the function \( f(x, y) = -x^4 + 4xy - 2y^2 + 1 \). 13. Find the maximum value of the function \( f(x, y) = 6 - 4x^2 - y^2 \) subject to the constraint \( 4x + y = 5 \). 14. Find the maximum and minimum values of the function \( f(x, y) = xy \) on the ellipse given by the equation \( x^2 + \frac{y^2}{4} = 1 \).
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