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version 1.2, 2002/07/18 15:52:27	version 1.3, 2004/01/09 14:29:26
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Numerical Response problems are answered by entering a number and an optional	Numerical Response problems are answered by entering a number and an optional
unit. For instance, a numerical response problem might have an answer of	unit. For instance, a numerical response problem might have an answer of
$2m/s^{2}$. Formula Response problems are answered by entering a mathematical	$2m/s^{2}$. Formula Response problems are answered by entering a mathematical
formula. For instance, a numerical response problem might have an answer	formula. For instance, a formula response problem might have an answer
of $x^{2}+11$. The answer may be in any equivalent format. For instance,	of $x^{2}+11$. The answer may be in any equivalent format. For instance,
for $x^{2}+11$, the system will also accept $x*x+11$ or $x^{2}+21-10$.	for $x^{2}+11$, the system will also accept $x*x+11$ or $x^{2}+21-10$.