document.write( "Question 423579: I am confuse some could someone help please. \r
\n" ); document.write( "\n" ); document.write( "Explain the domain and range of a function. Under what circumstances would the domain be something other than \"all real numbers\"? Provide an example of a function whose domain does not include all real numbers.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #295410 by scott8148(6628) $\"\"$ $\"About$

You can put this solution on YOUR website!
the domain is the group of numbers that are fed onto some function ___ usually the x values\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "the range is the group of numbers that result from the operation of the function ___ usually the y values\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "y = 2x / (x + 1) ___ when x=-1 , the function (value of y) is undefined (we can't divide by zero)
\n" ); document.write( "so the domain would be all reals EXCEPT -1 \n" ); document.write( "

\n" );