f(x,y)= x^2 + y^2 + 2x^2y^2 1. Then f(2,1) =_________ 2. 2xf(2,1)=________ Foto (is not a 2,is something else) 3.The y-

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.10: Partial Fractions
Problem 14E
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14 Let z = f(x,y)= x^2 + y^2 + 2x^2y^2 1. Then f(2,1) =_________ 2. 2xf(2,1)=________ Foto (is not a 2,is something else) 3.The y-z trace is _________ (Chose Circle, hyperbola,porabola or ellipse)
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