SOLUTION: What is the difference between domain and range? Describe the values of x that may not be appropriate values even when they are defined by your classmate's functions.

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Question 132989: What is the difference between domain and range? Describe the values of x that may not be appropriate values even when they are defined by your classmate's functions.
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
In a given function where y is given as a function of x (for example), the domain is defined as all valid values for x. The range is the set of y values that result from the valid x values
Generally speaking, a value of x that makes a function undefined is not a valid value for the domain (for instance if y+=+1%2Fx the domain x could not include the number 0.)
In problems involving physics or things like time, values that would be 'nonsense' are excluded from the domain (for instance values where time is negative or temperature would be below absolute zero, etc)