loncom/homework/lonmaxima.pm - diff

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version 1.15, 2007/05/29 20:56:39	version 1.16, 2007/06/15 21:49:50
Line 121 sub maxima_eval {	Line 121 sub maxima_eval {

sub compareterms {	sub compareterms {
my ($socket,$terma,$termb)=@_;	my ($socket,$terma,$termb)=@_;
my $difference=$terma.'-'.$termb;	my $difference=$terma.'-('.$termb.')';
if (&blacklisted($difference)) { return 'Error: blacklisted'; }	if (&blacklisted($difference)) { return 'Error: blacklisted'; }
my $reply=&maximareply($socket,'trigsimp(trigreduce('.$difference.'));');	my $reply=&maximareply($socket,'trigsimp(trigreduce('.$difference.'));');
if ($reply=~/^\s0\s$/) { return 'true'; }	if ($reply=~/^\s0\s$/) { return 'true'; }