The Purple Bear

1. Cộng đồng
2. Content Requests and Feedback

There's this account that recently started commenting on various posts and poses to be Sal Khan. Now, I doubt this is the real Sal Khan because there is already a Sal account on Khan, with his Blac...

1. Cộng đồng
2. Feature Requests and General Site Feedback

I just have a suggestion for the drawing function. When finding integrals via a graph, it can be difficult to separate the graph into easy shapes. I rely on the draw tool to split the graph up, but...