IntroStart HereIntegrals
Area Intuition (Riemann Sum)
Overview
Slice the area under a curve into rectangles and add them up. As the rectangles get thinner, the approximation becomes exact.
Key Concepts
1
Riemann sum ≈ Σ f(xᵢ)Δx
2
Left, right, and midpoint rules
3
As n → ∞, the sum → the exact integral
See it in action
Use the interactive visualizer to explore this concept with real graphs.