Let $f ( x , y ) = \sin ( 2 x + y )$

question 201

Multiple Choice

Let $f ( x , y ) = \sin ( 2 x + y )$ . Find the value of the partial derivative $f _ { x y } \left( \pi , \frac { \pi } { 2 } \right)$ .

• A) \(\sqrt { 2 }\)
• B) \(- \sqrt { 2 }\)
• C) \(2 \sqrt { 2 }\)
• D) \(- 2 \sqrt { 2 }\)
• E) \(\frac { \sqrt { 2 } } { 2 }\)
• F) \(- 2\)
• G)2
• H)0

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