Find the Indicated Partial Derivative $$f ( x , y ) = x ^ { 2 } y ^ { 4 } - 3 x ^ { 4 } y , f _ { m x }$$

question 39

Multiple Choice

Find the indicated partial derivative. $$f ( x , y ) = x ^ { 2 } y ^ { 4 } - 3 x ^ { 4 } y , f _ { m x }$$

• A) \(f _ { xx x } = 12 x ^ { 2 } y\)
• B) \(f _ { xx x } = - 36 x y\)
• C) \(f _ { xx x } = 3 x y\)
• D) \(f _ { xxx } = - 72 x y\)
• E) \(f _ { xx x } = - 3 x y\)

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