Exponential Functions 1
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Lesson Summary:
In this lesson, the definition of exponential functions is explored and three different exponential functions are graphed. An exponential function is of the form f(x) = b^x where b is greater than zero and not equal to one. The graph of the function changes depending on the value of b, with some exponential functions being steeper than others. The lesson also covers the fact that the same exponential function can be written in different ways, giving students a more comprehensive understanding of exponential functions.
Lesson Description:
In this video, exponential functions are defined and graphed.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- What is the definition of an exponential function?
- How do you graph an exponential function using a table of values?
- How do you graph f(x) = 2^x?
- How do you graph y = 5^x?
- How do you graph y = (1/2)^x?
- What happens when 0 < b < 1 in y = b^x?
- What happens when b > 1 in y = b^x?
- What happens as b gets larger in y = b^x?
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Staff Review
This lesson is a very good introduction to exponential functions. It explains what an exponential function is, gives the definition, and shows how to graph exponential functions. You will see how exponential functions and their graphs behave depending on the value of b in y = b^x.
