document.write( "Question 172197: What is the appropriate domain and range of this cubic function in interval notation: $\"y=x%5E3%2B2x%5E2-3x\"$ \n" ); document.write( "

Algebra.Com's Answer #127221 by Edwin McCravy(20055) $\"\"$ $\"About$

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What is the appropriate domain and range of this cubic function in interval notation: $\"y=x%5E3%2B2x%5E2-3x\"$
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document.write( "Every cubic polynomial functon of odd degree has the \r\n" );
document.write( "same domain and range, namely \"all real numbers\".\r\n" );
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document.write( "Since this is third degree polynomial, and 3 is odd,\r\n" );
document.write( "then its domain in interval notation is\r\n" );
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document.write( "and the range in interval notation is also\r\n" );
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document.write( "[Even degree polynomials have that same domain, but not\r\n" );
document.write( "the same range, as odd-degree polynomials do.]\r\n" );
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document.write( "Edwin

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