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Find hmy(x,y,z)h_{m y}(x, y, z) For the Function h(x,y,z)=e9xcos(y+7z)h ( x , y , z ) = e ^ { 9 x } \cos ( y + 7 z )

Question 43

Multiple Choice

Find hmy(x,y,z) h_{m y}(x, y, z) for the function h(x,y,z) =e9xcos(y+7z) h ( x , y , z ) = e ^ { 9 x } \cos ( y + 7 z )


A) 63e9xcos(y+7z) 63 e ^ { 9 x } \cos ( y + 7 z )
B) 49e9xsin(y+7z) 49 e ^ { 9 x } \sin ( y + 7 z )
C) 63e9xsin(y+7z) - 63 e ^ { 9 x } \sin ( y + 7 z )
D) 49e9xcos(y+7z) - 49 e ^ { 9 x } \cos ( y + 7 z )

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