Tangent Line Using Many Different Limit Configurations

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The tangent line to the graph of at is the limiting position of the secant lines through the two points and as , for any constants .

Contributed by: Soledad María Sáez Martínez and Félix Martínez de la Rosa (March 2011)
Open content licensed under CC BY-NC-SA


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Reference: W. A. Simpson, "An Illuminating Generalization of the Definition of the Derivative," International Journal of Mathematical Education in Science and Technology, 24(1), 1993 pp. 152–156.



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