JavaScript to Calculate the nth root of a number

We are required to write a JavaScript function that calculates the nth root of a number and returns it.

Example

The code for this will be −

const findNthRoot = (m, n) => {
   try {
      let negate = n % 2 == 1 && m < 0;
      if(negate)
         m = −m;
      let possible = Math.pow(m, 1 / n);
      n = Math.pow(possible, n);
      if(Math.abs(m − n) < 1 && (m > 0 == n > 0))
      return negate ? −possible : possible;
   } catch(e){
      return null;
   }
};
console.log(findNthRoot(45, 6));

Output

And the output in the console will be −

1.8859727740585395

AmitDiwan

Updated on: 21-Nov-2020

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