About this ActiveBook
What's inside
4 interactive tools
📈
🧭
🌀
🛰️
Function grapher
Plot any function in 2D — pan, zoom, trace.
Vector field viewer
Visualize fields and flows on a moving grid.
Phase-space plot
Trajectories of dynamical systems.
API playground
Try real APIs with editable requests.
Why ActiveBooks
- ✓ Everything runs right in your browser — no setup, no install
- ✓ Lifetime updates as the author adds new chapters and tools
- ✓ Your state stays — bookmarks, parameters, notes
