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Home > PC > Chapter 1 > Lesson 1.1.4 > Problem 1-53


In the previous problem we had . What is the domain of ? On your calculator enter   and graph the function. This is equivalent to . Is your graph what you expected? Why do you think this occurred?

Calculator OK

The graph does not give a full line. The line starts at and then follows the line .
Since is defined for only values of , the composite function is only defined for .