Please someone answer this question..

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+7 votes

The following definite integral evaluates to

$$\int_{-\infty}^{0} e^ {-\left(\frac{x^2}{20} \right )}dx$$

- $\frac{1}{2}$
- $\pi \sqrt{10}$
- $\sqrt{10}$
- $\pi$

+9 votes

**Now, the given integral can be written as:**

**Since none of the options are equal to , the given options are incorrect. Y****ou can verify the result here: wolframalpha(Click to view)**

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