Teaching MPPSC Assistant Professor Mock Test Series 2025 Engineering Mathematics Calculus Differentiability
If z = eax+by f (ax - by), then \({b\frac{{{\rm{\delta z}}}}{{{\rm{\delta x}}}} + {\rm{a}}\frac{{{\rm{\delta z}}}}{{{\rm{\delta y}}}}{\rm{\;}}}\)equals to
1
2abz
2
-2abz
3
-2az
4
abz