Integral Calculus Question 275

Question: $ \int_{{}}^{{}}{{e^{2x+\log x}}}dx= $

Options:

A) $ \frac{1}{4}(2x-1)+\frac{2}{x+1}+c $

B) $ \frac{1}{4}(2x+1)+\frac{2}{x+1}+c $

C) $ \frac{1}{2}(2x+1)e^{2x}+c $

D) $ \frac{1}{2}(2x+1)e^{2x}+c $

Show Answer

Answer:

Correct Answer: A

Solution:

$ \int_{{}}^{{}}{{e^{2x+\log x}}dx}=\int_{{}}^{{}}{xe^{2x}dx} $ $ =\frac{xe^{2x}}{2}-\int_{{}}^{{}}{\frac{1}{2}e^{2x}dx+c}=\frac{e^{2x}}{4}(2x-1)+c. $