Find the local maximum and minimum values and saddle point(s) of the function f(r, y) = -x4 + 4xy – 2y² + 1.
Find the local maximum and minimum values and saddle point(s) of the function f(r, y) = -x4 + 4xy – 2y² + 1.
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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Please answer number 12!

Transcribed Image Text:**Mathematics Problems for Advanced Calculus Students**
**Problem 11:**
Find an equation of the tangent plane to the surface \(\sqrt{x} + \sqrt{y} + \sqrt{z} = 4\) at the point \(P(4, 1, 1)\).
**Problem 12:**
Find the local maximum and minimum values and saddle point(s) of the function \(f(x, y) = -x^4 + 4xy - 2y^2 + 1\).
**Problem 13:**
Find the maximum value of the function \(f(x, y) = 6 - 4x^2 - y^2\) subject to the constraint \(4x + y = 5\).
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