defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Differential Calculus Evaluation of derivatives
If \(\rm\frac{e^x}{1−x}\) = B0 + B1x + B2x2 + ……. + Bnxn + ……, then the value of (Bn − Bn−1) is
1
\(\rm\frac{1}{n!}\)
2
\(\rm\frac{1}{(n−1)!}\)
3
\(\rm\frac{n}{n+1}\)
4
\(\rm\frac{n−1}{n+1}\)