JavaScript | Math.E() function

The Math.E() is an inbuilt function in JavaScript which is used to get the value of ep, where p is any given number.
The number e is a mathematical constant having an approximate value equal to 2.718.

  • It was discovered by the Swiss mathematician Jacob Bernoulli.
  • This number is also called Euler’s number.

Syntax:

Math.exp(p)

Parameter: This funcion accepts a sinlge parameter p is any number.

Return Value: It return the value of ep, where p is any given number as parameter.

Example:



Input  : Math.exp(0)
Output : 1

Explanation:
Here the value of parameter p is 0, So after putting the value 0 instead of p in ep
then its value becomes 1.

Input  : Math.exp(2)
Output : 7.38905609893065

Explanation:
Here the value of parameter p is 2, So after putting the value 2 instead of p in ep
then its value becomes 7.38905609893065.

Let’s see JavaScript program:

  • Example 1:
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    <script>
      // Here different values is being taken as
      // as parameter of Math.exp() function.
      document.write(Math.exp(0) + "<br>");
      document.write(Math.exp(1) + "<br>");
      document.write(Math.exp(2) + "<br>");
      document.write(Math.exp(-1) + "<br>");
      document.write(Math.exp(-7) + "<br>");
      document.write(Math.exp(10) + "<br>");
      document.write(Math.exp(1.2));
    </script>

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    Output:

    1
    2.718281828459045
    7.38905609893065
    0.36787944117144233
    0.0009118819655545162
    22026.465794806718
    3.3201169227365472
    
  • Example 2: Here parameter should must be a number otherwise it give error or NaN i.e, not a number.
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    <script>
      // Here alphabet parameter give error.
      document.write(Math.exp(a));
    </script>

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    Output:

    Error: a is not defined
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    <script>
      // Here parameter as a string give NaN.
      document.write(Math.exp("gfg"));
    </script>

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    Output:

    NaN
  • Supported Browsers: The browsers supported by JavaScript Math.E() function are listed below:

    • Google Chrome
    • Internet Explorer
    • Firefox
    • Opera
    • Safari


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    Improved By : Akanksha_Rai