Update index.md (#21446)

Added an a to a sentence where one was needed
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jgowman
2018-11-13 16:18:13 -07:00
committed by nik
parent 54bbe61e75
commit e20926ed94

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@ -9,7 +9,7 @@ It takes one argument `x` - an integer, or decimal, or a complex number.
## Return Value
The return value would be a positive number or zero. Even if complex number is passed, it would return its magnitude, computed as per complex number algebra.
The return value would be a positive number or zero. Even if a complex number is passed, it would return its magnitude, computed as per complex number algebra.
## Code Sample
```python