state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Mathematics Integral Calculus Indefinite Integrals
সমাকল \(\rm \int\left(1+x-\frac{1}{x}\right) e^{x+\frac{1}{x}} d x\) এর মান হল
1
\(\rm (x-1) e^{x+\frac{1}{x}}+c\)
2
\(\rm x e^{x+\frac{1}{x}}+c\)
3
\(\rm (x+1) e^{x+\frac{1}{x}}+c\)
4
\(\rm -x e^{x+\frac{1}{x}}+c\)