If one sets a secant e.g. to the “cubic parabola” through its points and , there is also a third common point .
Notice that a secant line can also be tangent to the curve at some point, given that tangency is only a local property. In the following picture, is a secant line for the curve (since it intersects the curve at points and ), yet it is also a tangent line at the point .
|Date of creation||2013-03-22 14:50:34|
|Last modified on||2013-03-22 14:50:34|
|Last modified by||Mathprof (13753)|
|Synonym||secant of the curve|
|Synonym||secant to the curve|