Find the differential dz of the function f(x, y) = 4y² + x²y-2xy and use it to approximate Az at point (1,-1). Use Ax = 0.03 and Ay = -0.02. What is the exact value of Az?

College Algebra (MindTap Course List)
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ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
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Chapter2: Functions And Graphs
Section2.6: Proportion And Variation
Problem 17E: Find the constant of proportionality. y is directly proportional to x. If x=30, then y=15.
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Find the differential dz of the function f(x, y) = 4y² + x²y-2xy and use it to approximate Az at point (1,−1). Use
Ax = 0.03 and Ay=-0.02. What is the exact value of Az?
Transcribed Image Text:Find the differential dz of the function f(x, y) = 4y² + x²y-2xy and use it to approximate Az at point (1,−1). Use Ax = 0.03 and Ay=-0.02. What is the exact value of Az?
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