67/1000, derivative & integral of 67

Why Integration and Differentiation Undo each other? (Proof of the Fundamental theorem of calculus)

68/1000, midpoint rule approximation for the integral of sqrt(1+x^3) from 0 to 2

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Not all freestyle kicks are the same 🦵 1️⃣ Small and fast Best for sprinting and short distances. High rhythm, high speed. 2️⃣ Slightly bigger and more relaxed Often a better option for longer swims and open water. Less energy, more sustainability. 3️⃣ Too big and too slow ❌ This is where many beginners go wrong. The legs create more drag, the body becomes unstable, and propulsion drops dramatically. A good kick doesn't need to be big. It needs to be efficient. #CapCut #beginnerswimming #adults

66/1000, derivative of e^(ax)*sin(bx), product rule and chain rule, calculus 1

64/1000, solving dy/dx=y, separable differential equation

65/1000, vertex formula of a parabola y=ax^2+bx+c using calculus