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Escolha a alternativa quer contenha as derivadas parciais da função: f(x,y) = 2x2 - 3y - 4 Opção A fraction numerator partial differential f over denominator partial differential x end fraction equals 2 x semicolon space fraction numerator partial differential f over denominator partial differential y end fraction equals 2 y. Opção B fraction numerator partial differential f over denominator partial differential x end fraction equals 2 semicolon space fraction numerator partial differential f over denominator partial differential y end fraction equals negative 2 y. Opção C fraction numerator partial differential f over denominator partial differential x end fraction equals negative 2 x semicolon space fraction numerator partial differential f over denominator partial differential y end fraction equals 3 y. Opção D fraction numerator partial differential f over denominator partial differential x end fraction equals 4 x semicolon space fraction numerator partial differential f over denominator partial differential y end fraction equals negative 3. Opção E fraction numerator partial differential f over denominator partial differential x end fraction equals 2 x semicolon space fraction numerator partial differential f over denominator partial differential
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Clodoaldo Junior

há 4 dias

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Ed Verified user icon

há 4 dias

Para encontrar as derivadas parciais da função \( f(x,y) = 2x^2 - 3y - 4 \), precisamos calcular as derivadas em relação a \( x \) e \( y \). 1. Derivada parcial em relação a \( x \): \[ \frac{\partial f}{\partial x} = \frac{\partial}{\partial x}(2x^2 - 3y - 4) = 4x \] 2. Derivada parcial em relação a \( y \): \[ \frac{\partial f}{\partial y} = \frac{\partial}{\partial y}(2x^2 - 3y - 4) = -3 \] Agora, vamos analisar as opções: - Opção A: \( \frac{\partial f}{\partial x} = 2x; \frac{\partial f}{\partial y} = 2y \) (Incorreta) - Opção B: \( \frac{\partial f}{\partial x} = 2; \frac{\partial f}{\partial y} = -2y \) (Incorreta) - Opção C: \( \frac{\partial f}{\partial x} = -2x; \frac{\partial f}{\partial y} = 3y \) (Incorreta) - Opção D: \( \frac{\partial f}{\partial x} = 4x; \frac{\partial f}{\partial y} = -3 \) (Correta) - Opção E: (incompleta) Portanto, a alternativa correta é a Opção D: \( \frac{\partial f}{\partial x} = 4x; \frac{\partial f}{\partial y} = -3 \).

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