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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §2.3 The Slope and the Tangent Line, #38 · Calculus · Derivatives

At a distance … from …, how far is the curve …

At a distance $Δ x$ from $x = 1$ , how far is the curve $y = 1/ x$ above its tangent line?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §2.3 The Slope and the Tangent Line, #38

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