Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int\left(x 2^{x}\right) d x=?$
A. $\frac{2^{x}}{(\log 2)}(x+\log 2)+C$
B. $\frac{2^{x}}{(\log 2)^{2}}(x+\log 2-1)+C$
C. $\frac{x \cdot 2^{x}}{(\log 2)}+\frac{2^{x}}{(\log 2)^{2}}+C$
D. none of these
Solution:
