5) (From Hardcover Book, Marsden/Tromba, Vector Calculus, 6th ed., Exercises for Section 3.1, # 32) xy(x² - y²) (x² + y²) (a) If (x, y) = (0, 0), calculate (b) Show that of(0, 0) Let f (x, y) = if (x, y) ‡ (0, 0) and ƒ (0,0) = 0. af მყ af ?х and -(0,0) af ду = 0. .

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Q: 6) (From Hardcover Book, Marsden/Tromba, Vector Calculus, 6th ed., Section 4.1., # 20) Show that, at…

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Q: 5) (From Hardcover Book, Marsden/Tromba, Vector Calculus, 6th ed., Exercises for Section 3.1, # 32)…

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