SOLUTION: What is the appropriate domain and range of this cubic function in interval notation: {{{y=x^3+2x^2-3x}}}

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Question 172197: What is the appropriate domain and range of this cubic function in interval notation:
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
What is the appropriate domain and range of this cubic function in interval notation: 

Every cubic polynomial functon of odd degree has the 
same domain and range, namely "all real numbers".

Since this is third degree polynomial, and 3 is odd,
then its domain in interval notation is



and the range in interval notation is also

.

[Even degree polynomials have that same domain, but not
the same range, as odd-degree polynomials do.]

Edwin
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