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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, #2 · Calculus · Derivatives

For … find equations for (a) the tangent line and normal line…

For $y = x^{2} + x$ find equations for
(a) the tangent line and normal line at $(1, 2)$ ;
(b) the secant line to $x = 1 + h$ , $y = (1 + h)^{2} + (1 + h)$ .

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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, #2

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