# Approximating the Tangent to a Curve with Secants

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This Demonstration shows how to find the slope of the tangent line to a curve at a point by approximating it by a secant, that is, a line joining two points A and B on the curve. The approximation becomes better as the points draw nearer to the point of interest.

Contributed by: Stephen Wilkerson (Towson University) (March 2011)

Open content licensed under CC BY-NC-SA

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## Details

detailSectionParagraph## Permanent Citation

"Approximating the Tangent to a Curve with Secants"

http://demonstrations.wolfram.com/ApproximatingTheTangentToACurveWithSecants/

Wolfram Demonstrations Project

Published: March 7 2011