Q101 / 180 · COMEDK 2017 · Mathematics

Evaluate $\int_{1}^{2} \frac{d x}{x^{2}}$.

Correct answer
A
$\frac{1}{2}$
B
1
C
2
D
$-1$

Solution

$\int_{1}^{2} \frac{d x}{x^{2}}=\left[\left(\frac{-1}{x}\right)\right]_{1}^{2}=\frac{1}{2}$

Hence, the correct answer is option: 'A'.

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