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
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    • Safari
      • 

    

    
          
          
          
          
    
            
    
    
    
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