When it won't land, Margati makes the movie.
One movie per topic — from a single question or a whole assignment, every label on the model.
- 1A curve, and a point on itP = (1, f(1))
- 2Cut a secant to a second pointslope = Δy / Δx
- 3Slide Q down toward PΔx → 0
- 4What is left is the tangentslope = f′(1)