works for the purposes of coding the correct answer. But students who
enter "(-4)^(2/3)" will still be told that they have entered "nan".
This is not a huge deal, and it's not a WeBWorK problem (it's a perl
problem I think). One solution is to tell students to re-write their
answer or to use a decimal approximation. But I am constantly
reassuring my students that they don't have to worry about these sorts
of trivialities, that WeBWorK is very smart and will correctly
interpret what they type. In fact, I am constantly telling them *not*
to use decimal approximations.
I feel like, if I warn them that WeBWorK isn't smart enough to figure
this one out, then they're going to use that as an excuse to give up on
other problems before they should ("I know I've got the right answer,
but WeBWorK isn't taking it").
Again, no big deal. Just wondering if anyone else had run across this problem and found an effective workaround.
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