Teaching MPPSC Assistant Professor Mock Test Series 2025 Engineering Mathematics Differential Equations Partial Differential Equations
If u = (8x2 + y2) (log x - log y), then \(\left( {{\rm{x}}\frac{{\partial {\rm{u}}}}{{\partial {\rm{x}}}}\,{\rm{ + }}\,{\rm{y}}\frac{{\partial {\rm{u}}}}{{\partial {\rm{y}}}}} \right)\) equals
1
u/2
2
2u
3
u
4
-2u