Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Differential Calculus Evaluation of derivatives
If xayb = (x - y)a+b, then the value of \(\frac{{{\rm{dy}}}}{{{\rm{dx}}}} - \frac{{\rm{y}}}{{\rm{x}}}\) is equal to
1
\(\frac{{\rm{a}}}{{\rm{b}}}\)
2
\(\frac{{\rm{b}}}{{\rm{a}}}\)
3
1
4
0
5
None of the above