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Bellwork – Show right and explain one wrong!. Questions About Functions. There are lots of questions we can ask about functions! Here are three of them: Where is this function convex or concave? Where is this function increasing or decreasing?
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Questions About Functions • There are lots of questions we can ask about functions! Here are three of them: • Where is this function convex or concave? • Where is this function increasing or decreasing? • Where are the maximum and minimum values of this function? • We want to be able to answer these questions for any function.
Increasing and Decreasing • ITS All About JOE • We mark and record the interval on the X axis.
Convex or Concave • The graph of a concave function looks like a Hill. • The graph of a convex function looks like a Valley.
Convex or Concave • It’s also possible for a graph to be neither concave nor convex.
You Try! • Is this graph concave, convex, or neither? • On which interval(s) is the graph increasing? • On which interval(s) is the graph decreasing?
You Try! • Is this graph concave, convex, or neither? • On which interval(s) is the graph increasing? • On which interval(s) is the graph decreasing?
You Try! • Is this graph concave, convex, or neither? • On which interval(s) is the graph increasing? • On which interval(s) is the graph decreasing?
Minimum and Maximum • The highest and lowest points on a graph are called the maximum and minimum. • The global maximum and global minimum are the highest and lowest points over the entire domain. • A local maximum and local minimum are the highest and lowest points over a certain interval. • These are displayed as a point
Maximum and Minimum • Find all local minimum and maximum values. • Is there a global maximum? • Is there a global minimum?
Maximum and Minimum • Find all local minimum and maximum values. • Is there a global maximum? • Is there a global minimum?