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Diff for /loncom/html/adm/help/tex/Tolerance.tex between versions 1.2 and 1.3

version 1.2, 2002/07/18 15:52:27 version 1.3, 2003/05/29 20:30:51
Line 15  to exactly match the computers idea of t Line 15  to exactly match the computers idea of t
 default too large for some problems.   default too large for some problems. 
   
 There are  There are
 two kinds of tolerance. For some answer $a$ and a tolerance $t$,  three kinds of tolerance. For some answer $A$ and a tolerance $T$,
   
 \begin{enumerate}  \begin{enumerate}
 \item an \textbf{Absolute} tolerance\index{absolute tolerance}\index{tolerance, absolute}  \item an \textbf{Absolute} tolerance\index{absolute tolerance}\index{tolerance, absolute}
 will take anything in the range $a\pm t$. So if $a=10$ and $t=2$, then  will take anything in the range $A\pm T$. So if $A=10$ and $T=2$, then
 anything between 8 and 12 is acceptable.  anything between 8 and 12 is acceptable.
  Any number in the tolerance field \emph{without} a \textbf{\%} symbol is   Any number in the tolerance field \emph{without} a \textbf{\%} symbol is
 an absolute tolerance.  an absolute tolerance.
 \item a \textbf{Relative} tolerance\index{relative tolerance}\index{tolerance, relative}  \item a \textbf{Relative} tolerance\index{relative tolerance}\index{tolerance, relative}
 will take anything in the range $a\pm at$, where \emph{t} is interpreted  will take anything in the range $A\pm aT$, where \emph{T} is interpreted
 as a percentage. Any number in the tolerance field \emph{followed by} a \textbf{\%}  as a percentage/100. Any number in the tolerance field \emph{followed by} a \textbf{\%}
 symbol is a relative tolerance. For example, $a=10$ and $t=10\%$ will accept  symbol is a relative tolerance. For example, $a=10$ and $t=10\%$ will accept
 anything between 9 and 11.   anything between 9 and 11. 
 \end{enumerate}  
   
   
   \item a tolerance that is a calculated variable (identified by \$ sign as
   the first character). For example, if an answer is $\$X$,and for a student
   possible values range from $-\$X1$ to $+\$X1$, you could choose $T =
   \$tolerance = \$2X1/100;$ acceptable answers would then be from
   $\$X-\$tolerance$ to $\$X+\$tolerance$. (This is especially useful when answers
   close to zero are possible for some students)
   
   \end{enumerate}
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  Added in v.1.3

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