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Earn +20 ptsQ: What two functions do not have a domain of all real numbers?
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How to determine the domain set of all real numbers?
By definition, it is the set of all real numbers!
What is the domain and range of 2x plus 3 divided by 5?
(2x+3) / 5 Domain = All Real Numbers Range = All Real Numbers
What is the range of absolute value functions My teacher said it would be all real numbers. However I thought it would be positive real numbers. Can you explain who is right and why?
The absolute value of a number is positive, so the range is always a positive real number. You are correct. The domain, that is the value before you take the absolute value, is all real numbers, but the range is always positive.
What is the domain of y equals -4x?
The domain of y = -4x is all real numbers.
Would the domain be something other than all real numbers provide an example?
It could be a subset: for example, for the function y = log(x), the domain is x > 0. There are many functions whose domain is the complex plane.
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