convergence
![convergence](https://user-images.githubusercontent.com/61246381/87969916-9cc71800-cae0-11ea-8792-fd44b5823279.gif)

divergence
![divergence](https://user-images.githubusercontent.com/61246381/87970033-cbdd8980-cae0-11ea-9ba6-47f48898dab2.gif)

taylor series
![taylor](https://user-images.githubusercontent.com/61246381/87970112-e9125800-cae0-11ea-9a19-edcaaf91d7b6.gif)