latex in jupyter notebook code example

Example 1: code in markdown jupyter

```python
print "Hello World"
```

o/p 
print "Hello World"

Example 2: summation in jupyter markdown

$e^{i\pi} + 1 = 0$

Example 3: summation in jupyter markdown

$$e^x=\sum_{i=0}^\infty \frac{1}{i!}x^i$$