SOLUTION: Perhaps if I could know how to do a problem like this one, I could figure out how to do the others like this. Thanks for any help. Find the domain of the expression. {{{ t^3

Question 72215: Perhaps if I could know how to do a problem like this one, I could figure out how to do the others like this. Thanks for any help.
Find the domain of the expression.

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The domain is all allowable inputs that will result in the function outputting a real number. If I can plug in a number for a function and get an answer (a real number) then that number is in my domain. Since any real number can work in (it's not the same for all equations) the domain is x is the set of all real numbers (any number will work). Problems like 1/x are somewhat similar but with one big difference. If I put 0 in for x I get 1/0, which is not possible. Think, what number do I multiply 0 by to get 1 ? There is no such number (0*anything is always 0), so 0 is not in my domain.
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