The range of a set of numbers is the difference between the highest and lowest values. Find these and subtract the lowest from the highest.
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The range, usually of a function, is the set of value that the function can take. The integral range is a subset of the range consisting of integer values that the function can take.
f(x)=2x+2. Put in 0, 1/2, 1, 3/2, 2... and you will get integer values. That is for the domain. The numbers you get when you put that in are the range integral values.
Yes.
The signed integer range extends only from negative infinity to positive infinity. You have to make up your own names and symbols for whole numbers that are not included in that range.
When the absolute value of the positive integer is the same as the absolute value of the negative one.