$fp=fopen($archivo,"a+");
fclose($fp);
chmod($archivo,0777);
}
$fp=fopen($archivo,"a+");
fwrite(
$fp,"\n".$ref
);
fclose($fp);
}
}
*/
$largo = 300;
if (isset($_GET['l'])) {
$lg = intval($_GET['l']);
if (my_is_integer($lg)) {
if ($lg > 100 && $lg < 9999) {
$largo = $lg;
} else {
$largo = 100;
}
}
}
$tamano = "f2";
if (isset($_GET['t'])) {
$tm = $_GET['t'];
if ($tm == "f1" || $tm == "f2" || $tm == "f3") {
$tamano = $tm;
}
}
$color = "blanco";
function pow($x)
{
if ($this->has_variables()) {
$coeff_sum = $x->coeff_sum();
if ($x->has_variables() || !my_is_integer($coeff_sum)) {
throw new EvaluatorException("exponent must be an integer if the base contains variables");
}
if (pow(count($this->terms), $coeff_sum) > 100) {
throw new EvaluatorException("will be too many terms");
}
$p = $this->add(new Polynom(array()));
for (; $coeff_sum - 1 > 0; $coeff_sum--) {
$p = $p->mul($this);
}
} else {
if ($x->has_variables()) {
throw new EvaluatorException("exponent can not contain variables");
} else {
$p = new Polynom(array(new Term(pow($this->coeff_sum(), $x->coeff_sum()), array())));
}
}
if (strlen($p->tostring()) > 200) {
throw new EvaluatorException("the answer was too long");
}
return $p;
}
