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4x^2 + 9xy − y^2 = 8 implicit differentiation
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4x^2 + 9xy − y^2 = 8
implicit differentiation

User Sara Hamad
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1 Answer

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4x^2 + 9xy - y^2 = 8
8x + 9xf'(x) + 9y - 2yf'(x) = 0
f'(x) (2y - 9x) = 8x + 9y
f'(x) = (8x + 9y)/(2y - 9x)
User Ganbin
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