document.write( "Question 412149: what does it mean when a questions say \"what value should be excluded from the domain of the function\"? \n" ); document.write( "

Algebra.Com's Answer #289551 by jim_thompson5910(35256) $\"\"$ $\"About$

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You can NEVER divide by zero. Ever. So we CANNOT do something like $\"1%2F0\"$ because it is undefined.\r
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\n" ); document.write( "\n" ); document.write( "So if you have the rational expression $\"1%2Fx\"$ , then we must exclude x=0 from the domain because we CANNOT divide by zero. \r
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