Find the Requested Partial Derivative $( \partial w / \partial x ) _ { y , z }$

question 116

Multiple Choice

Find the requested partial derivative.
- $( \partial w / \partial x ) _ { y , z }$ if $w = x ^ { 3 } + y ^ { 3 } + z ^ { 3 } + 9 x y z$

• A) \(3 \left( x ^ { 2 } + 3 y z \right)\)
• B) \(3 \left( x ^ { 2 } + 3 x y z \right)\)
• C) \(3 \left( x ^ { 2 } + 6 y z \right)\)
• D) \(3 \left( x ^ { 2 } + 6 x y z \right)\)