Saved Bookmarks
| 1. |
If w(x,y, z) = x2 (y – z) + y2 (z – x) + z2 (x – y), then ∂w/x + ∂w/∂y + ∂w/∂z is ________. (a) xy + yz + zx (b) x (y + z) (c) y (z + x)(d) 0 |
|
Answer» The correct answer is : (d) 0 |
|