Find the First Partial Derivatives of the Function $f ( x , y , z ) = 2 x ^ { 3 } + 9 x y + 3 y z - z ^ { 5 }$

question 91

Short Answer

Find the first partial derivatives of the function $f ( x , y , z ) = 2 x ^ { 3 } + 9 x y + 3 y z - z ^ { 5 }$