More with Rules for Differentiation Mr. Miehl miehlm@tesd.net
Objective To evaluate a derivative at a point. To use the derivative to find the slope of a function. To use the derivative to find the equation of a tangent line.
Evaluating Derivatives Find the value of the derivative of:
Evaluating Derivatives Find the value of the slope of:
Tangent Lines Find an equation of the tangent line to the graph of: Slope of the tangent line
Tangent Lines Equation of the tangent line to f (x) at (3, 2)
Tangent Lines Find an equation of the tangent line to the graph of: Slope of the tangent line
Tangent Lines Equation of the tangent line to f (x) at
Slope of a Function Determine the point(s) at which the graph of has a slope of 1.
Slope of a Function Points with a slope of 1
Conclusion To find an equation of a tangent line: First, find the derivative of the function. Next, plug the corresponding x-value into the derivative, to find the slope. Finally, use the slope and the point to write an equation of the line.