[C.7] Evaluate a Function
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Lesson Summary:
In this video, you'll learn how to evaluate functions in multiple ways on your graphing calculator. The four methods are graphically using CALC/value, functional notation on the home screen, using a table of input/output, and using the trace key. The video discusses the advantages and disadvantages of each method and provides step-by-step instructions on how to use them. Whether you have one value to evaluate or multiple, there's a method that will work for you.
Lesson Description:
Evaluate functions in three ways on your graphing calculator: graphically using CALC/value, functional notation on the home screen, and using a table of input/outputs.
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Questions answered by this video:
- How do you evaluate a function at a particular value on a TI graphing calculator?
- How do you evaluate a function at a particular value by tracing, using a table, using the function variable on the home screen, and using a graph on a TI graphing calculator?
- How do you find the variable under VARS for a function / equation in the y= screen on a TI graphing calculator?
- How can you use a table on a TI graphing calculator to find y-values of a function at different x-values?
- How can you use the CALC value function from a graph on a TI graphing calculator?
- How can you use TRACE to find the outputs of a function given several inputs on a graph on a TI graphing calculator?
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Staff Review
This lessons will show you how to evaluate a function using several different methods on a TI graphing calculator. All steps involved in each method of solving are shown. There are many skills you can learn in this lesson that are very helpful. One step that makes the TRACE function slightly more useful is that you can simply type in a number and press enter to see the y-value at an exact x-value.
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