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PLEASE HELP what does -4=<X<4 mean?

Suppose that the function fis defined for all real numbers as follows. Graph the function f. Then determine whether or not the function is continuous.​

PLEASE HELP what does -4=<X<4 mean? Suppose that the function fis defined for-example-1
User Krystyne
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Answer:

the value of x is between -4 and 4

User Florian Neumann
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