2.3 The Product and Quotient Rules and Higher-Order Derivatives (Part 2) London Bridge, Lake Havasu City, Arizona Greg Kelly, Hanford High School, Richland, Washington Photo by Vickie Kelly, 2001
Objectives Find the derivative of a trigonometric function. Find a higher-order derivative of a function.
Consider the function slope We could make a graph of the slope: Now we connect the dots! The resulting curve is a cosine curve.
We can do the same thing for slope The resulting curve is a sine curve that has been reflected about the x-axis.
We can find the derivative of tangent x by using the quotient rule.
Derivatives of the remaining trig functions can be determined the same way.
Example: Find the derivative
Example: Find the derivative
Find the derivative:
Higher Order Derivatives: is the first derivative of y with respect to x. is the second derivative. (y double prime) is the third derivative. is the fourth derivative.
Higher Order Derivatives: See notation on page 125: y f(x) y' f '(x) dy/dx y'' f ''(x) d2y/dx2 y''' f '''(x) d3y/dx3 y (4) f (4)(x) d4y/dx4
Homework 2.3 (page 126) #39-67 odd 75, 79, #93-107 odd, # 117