Understanding Differentiation Part 1: The Slope of a Tangent Line

The video introduces differentiation, focusing on finding the equation of a tangent line to a curve. It explains the concept of a tangent line, which touches a curve at one point, and how to calculate its slope using secant lines. By moving a second point closer to the tangent point, the slope of the secant line approaches that of the tangent line. The video concludes by discussing the rate of change and its relation to differentiation.

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