the second derivative

The Second Derivative

Write a paragraph telling what information about the original function you can obtain when the graph of the derivative function is shown. Include as many details as possible.

In the next slides you will be presented (on the left) with the graph of the function, and on the right some choices for the derivative function. Choose the graph corresponding to the derivative function. – Give reason about your choice– For each of the graphs you did not choose give one

reason why it was not chosen

GIVEN THE GRAPH OF f(x) CHOOSE THE GRAPH OF f ‘(x)

In the next slides you will be presented (on the left) with the graph of the derivative function, and on the right some choices for the graph of the function (anti-derivative function). Choose the graph corresponding to the function. – Give reason about your choice– For each of the graphs you did not choose give one

reason why it was not chosen

GIVEN THE GRAPH OF f’(x) CHOOSE THE GRAPH OF f (x)

GIVEN THE GRAPH OF f’(x) CONSTRUCT A

GRAPH OF f (x)

Reconstructing a function from f ’

Click on the link below to work on this activity. The graph in red is the derivative function of a function f(x). Start at the green point on the left hand of the window and use the information about the derivative of the function at that point to move the other points on the screen to reflect a point on the graph of f(x). You can check how accurate your graph is.

The Second Derivative

Graphically you will find information about the graph of a function, its first and second derivative. Information about critical points and inflection points of the function will be obtained by looking at the graphs of the first and second derivatives.

Function and Its First Derivative

Second Derivative

First Derivative and Second Derivative

The derivative function of the derivative function is called the second derivative function

Higher Order Derivatives

Function and Its Second Derivative

Function, First, and Second Derivatives

Inflection Point of f(x)

Concave up to concave down

Local Max of f ’(x)

f “ changes from positive to negative

Function, First, and Second Derivatives

Inflection Point of f(x)

Concave down to concave up

Local min of f ’(x)

f “ changes from negative to positive

Select the correct answer in each case. On the intervals where a function is concave up,• The first derivative– Is positive/negative? – Is increasing/decreasing?

• The second derivative – Is positive/negative? – Is increasing/decreasing?

PRACTICE

Identifying f, f’, f’’

You will be presented with three graphs. They represent f, f ‘, f” . Determine which one is which. Give reasons for your choice