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Find f x and f y. f ( x, y ) = x 5 + y 5 + x 5y

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# Find f x and f y. f ( x, y ) = x 5 + y 5 + x 5y - PowerPoint PPT Presentation

1. 2. 3. 4. Find f x and f y. f ( x, y ) = x 5 + y 5 + x 5y. f x = 5x 4 + 5x 4y, f y = 5y 4 + x 5 f x = 2x + 2xy, f y = 2y + x 2 f x = 3x 2 + 3x 2y, f y = 3y 2 + x 3 f x = 4x 3 + 4x 3y, f y = 4y 3 + x 4. 1. 2. 3. 4.

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Find f x and f y. f ( x, y ) = x 5 + y 5 + x 5y
• f x = 5x 4 + 5x 4y, f y = 5y 4 + x 5
• f x = 2x + 2xy, f y = 2y + x 2
• f x = 3x 2 + 3x 2y, f y = 3y 2 + x 3
• f x = 4x 3 + 4x 3y, f y = 4y 3 + x 4

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Find the indicated partial derivatives. f ( x, y ) = sin ( 4x + 2y ) ; f y ( - 4, 8 )
• f y ( - 4, 8 ) = - 9
• f y ( - 4, 8 ) = 5
• f y ( - 4, 8 ) = 2
• f y ( - 4, 8 ) = - 8

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• fxx = 2x 2 - 54y 3, fxy = - 54xy 2, fyx = - 54xy 2, fyy = - 54x 2y
• fxx = 12x 2 - 18y 3, fxy = - 54xy 2, fyx = - 54xy 2, fyy = - 54x 2y
• fxx = 2x 2 - 18y 3, fxy = - 54xy 2, fyx = - 54xy 2, fyy = - 54x 2y
• fxx = - 12x 2 + 18y 3, fxy = 54xy 2, fyx = 54xy 2, fyy = 54x 2y

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If k, l, m are the sides of a triangle and K, L, M are the opposite angles, find {image} by implicit differentiation of the Law of Cosines.
• {image}
• {image}
• {image}
• {image}