One of my problems has two cases depending on the sign of the randomized variable x. I have written out complete solutions for each of the two cases. Question: How can I display only the solution for relevent case? I tried the

obvious "if" statement but it didn't work.

For the record here's my code for solutions, based on http://webwork.maa.org/wiki/PopUpLists :

#Context()->texStrings;

SOLUTION(EV3(<<'END_SOLUTION'));

$PAR SOLUTION $PAR

Solution:

(solution goes here)

END_SOLUTION

#Context()->normalStrings;

--------------

On a related note, how can I use tex mode in solutions? Webwork displays \( x \) as plain text...

Thanks!

### How to use variables/tex codes in solutions

by Siman Wong -
In reply to Siman Wong
Sunday, 16 October 2011, 1:06 PM

### Re: How to use variables/tex codes in solutions

by Siman Wong -
I found the answer: The standard if/then/else loop works if you put it outside the SOLUTION/END_SOLUTION environment:

if($m % 2 == 0){ SOLUTION(EV3(<<'END_SOLUTION')); $PAR SOLUTION $PAR \( $m \) is even END_SOLUTION } else{ SOLUTION(EV3(<<'END_SOLUTION')); $PAR SOLUTION $PAR \( $m \) is odd END_SOLUTION } #Context()->normalStrings;

In reply to Siman Wong
Sunday, 16 October 2011, 3:17 PM

### Re: How to use variables/tex codes in solutions

by Dick Lane -a,b,c are integers for the following snippet.

@EO = ( 'Even' , 'Odd' ) ;

$ap = @EO[ $a % 2 ] ;

$cp = ($c % 2 == 0) ? 'Even' : 'Odd' ;

Context()->texStrings;

BEGIN_SOLUTION

$SOLUTION

\( $a \) is $ap,

$b is @EO[$b % 2],

\( $c \) is $cp

END_SOLUTION

Context()->normalStrings;

Note: neither "Context()" command is commented-out, the new BEGIN_SOLUTION is used to initiate the block, and $SOLUTION to display bolded "Solution:".