Find all critical points of f(x,y)=x2y+16x2+25y2+4. List the critical points in the appropriate regions below. If there are multiple critical points in a region, separate them by commas. Type "NA" if there are none. a. x≥0,y≥0: b.x≥0,y<0: c.x<0,y<0:  I need a specific answer please and which one is N/A

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.1: Inner Product Spaces
Problem 15BEXP
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Find all critical points of f(x,y)=x2y+16x2+25y2+4.

List the critical points in the appropriate regions below. If there are multiple critical points in a region, separate them by commas. Type "NA" if there are none.

a. x≥0,y≥0:

b.x≥0,y<0:

c.x<0,y<0: 

I need a specific answer please and which one is N/A

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