You are using a browser not supported by the Wolfram Cloud
Supported browsers include recent versions of Chrome, Edge, Firefox and Safari.
I understand and wish to continue anyway »
WOLFRAM NOTEBOOK
Approximating the Tangent to a Curve with Secants
Approximating the Tangent to a Curve with Secants
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.