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YouTubeMATH👍🏻LOGIC
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Why do mathematicians call the rate of change a slope? And why does a tangent line represent dx dy ? For two distinct points P and Q, Δx Δy gives the exact average rate of change—the slope of the secant line. As Q approaches the fixed point P, Δx approaches zero and the secant slopes approach a limiting value. This limit is dx dy , the ...
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