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Which of the following statements about extremum is true for the function f(x,y) = x4 + y4- 2x2 + 4xy – 2y2 f(- 2,72) is a ma

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Answer #1

әл $ Ca, y2 = + +94 - 2x2 - 4xy - 2 2 Find partial derivative. > Ғх = а(х+ + 5* - 2x* + 4ху - 2 y2) = 4х4-1 +о - 2x2 4 49 -03 find critical points solre fe 20 4x² - 4x + 4y to 33-= -4 =y = x-23mo solre fy ao 4y3 +43 - 4y = 0 from o put y=x-ae3 4(3-2at vero, from 10 y 30-03 0 => point (010) at sana, y = N2-6213 y = N2(1-2) y=-nz » point (A2,-02) at se zna, y = -NE +62)3 =

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