A student got the following error on a problem we've used in 6 courses -- without anyone reporting an error in the past. The seed used on the problem when the error occurs is 348. I've included a copy of the problem template below.

--rac

---------------------------------------------Error message--------------------------------------

`Can't use '*' in this context; see position 16 of formula at line 93 of [PG]/macros/Parser.pl Died within main::Formula called at line 93 of [PG]/macros/Parser.pl from within main::Compute called at line 60 of [TMPL]/tmpEdit/Problems/setAppliedMath_01_02_Polynomials/AppMath_01_Polynomials.pg.rcruz.tmp `

### Error details

```
```

` Problem1 ERROR caught by Translator while processing problem file:tmpEdit/Problems/setAppliedMath_01_02_Polynomials/AppMath_01_Polynomials.pg.rcruz.tmp **************** Can't use '*' in this context; see position 16 of formula at line 93 of [PG]/macros/Parser.pl Died within main::Formula called at line 93 of [PG]/macros/Parser.pl from within main::Compute called at line 60 of [TMPL]/tmpEdit/Problems/setAppliedMath_01_02_Polynomials/AppMath_01_Polynomials.pg.rcruz.tmp `

`---------------------------Problem Template------------------------------`

` `

`loadMacros(`

"PGstandard.pl",

"MathObjects.pl",

"contextLimitedNumeric.pl"

);

` `

`TEXT(&beginproblem);`

` `

`######################################`

# Setup

` `

`$p = non_zero_random(-12,12,1);`

do {$q = non_zero_random(-7,7,1);} while ($p==$q||$q==1||$q==-1);

$r = random(4,9,1) + random(.1,.9,.1); #Make sure its not an integer

` `

`$a = random(4,6,1);`

$b = random(4,6,1);

` `

`######################################`

# Main text

` `

`BEGIN_TEXT`

Use a calculator to approximate the following numbers:

$PAR

a) \( $r^$a \)

$BR

ANSWER: \{ans_rule(10)\}

$PAR

b) \( \displaystyle \left( \frac{$p}{$q} \right)^$b \)

$BR

ANSWER: \{ans_rule(10)\}

END_TEXT

` `

`######################################`

# Answers

` `

Context("LimitedNumeric");

` `

`$ans_a = Compute($r**$a);`

ANS($ans_a->cmp);

` `

`$ans_b = Compute(($p/$q)**$b);`

ANS($ans_b->cmp);

` `

`$showPartialCorrectAnswers = 1;`

` `

`######################################`

` `

`ENDDOCUMENT(); # This should be the last executable line in the problem.`