Rate of Change Calculator
See how an average rate of change turns into an instantaneous one. Shrink the interval and the secant line slides into the tangent, while a table shows the two rates closing in.
What you can do
- Average and instantaneous rates, with working
- A secant that slides into the tangent, by dragging or on its own
- A table of the average rate as the interval shrinks
- Differentiation from first principles for polynomials