Import the NumPy library under the alias `np`

.

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```
```

Add `2`

to every element of the following NumPy array.

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```
arr = np.array([2,3,4,9,7,5,8,2])
```

Double the value of every element in `arr`

by adding it to itself.

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```
```

Create an array of zeros by subtracting `arr`

from itself.

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```
```

Multiply every element in `arr`

by 6.

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```
```

Divide every element in `arr`

by 4.

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```
```

Create an array of ones by dividing every element in `arr`

by itself.

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```
```

Calculate the square root of every element in `arr`

. Do not use the `**`

operator.

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```
```