32 echo --------TASK 1--------- br result sqrt sin sqrt cos echo resul

$a = 9.4;
$b = 0.32;
echo"--------TASK 1---------<br>";
$result = ($a - $b) / (sqrt(sin($a)) + sqrt($b) * cos($a) );
echo $result;
echo "<br>";

echo"--------TASK 2---------\n";
$number = 153331;

function isPalindrome($str){
    $strrev=strrev($str);
    if ($str==$strrev) return "palindrom";
    else return "ne palindrom";
}

$res = isPalindrome($number);
echo $res;

echo"--------TASK 3---------\n";

$array = array(1,3,4,5,-4,2,-5);