How to calculate the nth root of a number in JavaScript?

Javascript Web Development Front End Technology

To calculate the end root of a number, use Math.abs() method. Here, we’re using the Match.pow method also. You can try to run the following code to calculate the square root of numbers in JavaScript −

Example

Live Demo

<html>
   <head>
      <title>Calculate root</title>
   </head>

   <body>
      <script>
         function displayRoot(x, num) {
            val = num % 2;
            if((val == 1) || x < 0)
            x = -x;
            var a, num;
            a = Math.pow(x, 1 / num);
            num = Math.pow(a, num);
            if(Math.abs(x - num) < 1 &amp;&amp; (x > 0 === num > 0))
            return val ? -a : a;
         }
         document.write(displayRoot(36, 2));
         document.write("<br>"+displayRoot(49, 2));
         document.write("<br>"+displayRoot(36, -2));
         document.write("<br>"+displayRoot(216, -2));
      </script>
   -+
   </body>
</html>

Anjana

Published on 18-Jan-2018 11:51:57

Previous Page Print Page