Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Application of Integrals

Question:

The integral $∫e^x\left(1+\frac{1}{x}+log\, x\right)$ is equal to :

Options:

$e^x(x+log \, x) + C$

$e^x(1+log \, x) + C$

$e^xlog\, x + C$

$e^x(x-log \, x) + C$

Correct Answer:

$e^x(1+log \, x) + C$

Explanation:

The correct answer is Option (2) → $e^x(1+log \, x) + C$

$∫e^x+e^x\left(1+\frac{1}{x}+\log x\right)$

$=e^x+∫e^x\left(1+\frac{1}{x}+\log x\right)$

$⇒e^x+e^x\log x+C$

$=e^x(1+\log x)+C$