/** this function returns math expression into your form, the parameter is optional
* quite simmilar to insertQuestion, but returns the output as a text instead of echoing
*/
function returnQuestion($question = QUESTION, $color = COLOR, $prime = 37)
{
//default prime is 37, you can change it when specifying the different parameter
$output = MathGuard::produceOutput($question, $color, $prime);
return $output;
}
