# Markdown Demo ## External 1.1 Content 1.1 Note: This will only appear in the speaker notes window. ## External 1.2 Content 1.2 ## External 2 Content 2.1 ## External 3.1 Content 3.1 ## External 3.2 Content 3.2 ## External 3.3 (Image) ![External Image](https://s3.amazonaws.com/static.slid.es/logo/v2/slides-symbol-512x512.png) ## External 3.4 (Math) `\[ J(\theta_0,\theta_1) = \sum_{i=0} \]`