document.write( "Question 205718: What is the difference between domain and range? Describe a real life situation that could be modeled by a function. \n" ); document.write( "
Algebra.Com's Answer #155337 by RAY100(1637)\"\" \"About 
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Domain is the set of the independent variable, usually x,,
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\n" ); document.write( "while Range is the set of the dependent variable, usually y
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\n" ); document.write( "Physically Domain might be time while Range is Weight, for a diet log
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\n" ); document.write( "or Domain might be elapsed time vs Range , distance, for a travel log,
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\n" ); document.write( "Usually Domain and Range are expressed as, \"all Real Numbers\"
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\n" ); document.write( "or \" all positive Real Numbers\"
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\n" ); document.write( "Exceptions occur when the value of the function, dependent variable, is
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\n" ); document.write( "UNDEFINED,(denominator is zero),or COMPLEX (square root of a negative number)
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