Video narration
Integrals look scary, but they’re just “adding up” in different ways. First: indefinite integration—no limits, just the antiderivative, plus C: ∫f(x)dx = F(x) + C. Next: definite integration—limits a to b, giving an exact number, like area under a curve. Then multiple integrals: ∬ for 2D area, and ∭ for 3D volume. Finally, line and surface integrals: work along a path, and flux through a surface in physics. Save this map, and follow for more!