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Learn how to write the equation of a tangent line through a point of a function

👉 Learn how to find and write the equation of the tangent line of a curve at a given point. The tangent of a curve at a ...
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Find the point where their exist a horizontal tangent line

👉 Learn how to find the point of the horizontal tangent of a curve. A tangent to a curve is a line that touches a point in ...
Simon Fraser University

Secants, Tangents and Derivatives

Given a function f(x), and two points on the curve (a, f(a)) and (b, f(b)) the line joining these two points is called a secant line of f. (Not to be confused with the trigonometric secant (sec) ...