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# JavaScript Math.exp() function

• Last Updated : 27 Oct, 2022

The Math.exp() is an inbuilt function in JavaScript that 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 function accepts a single parameter p as any number.
Return Value: It returns the value of ep, where p is any given number as a 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 the JavaScript program:

Example 1:

## Javascript

 ``

Output:

```1
2.718281828459045
7.38905609893065
0.36787944117144233
0.0009118819655545162
22026.465794806718
3.3201169227365472```

Example 2: Here parameter should be a number otherwise it gives an error or NaN i.e, not a number.

## Javascript

 ``

Output:

`Error: a is not defined`

## Javascript

 ``

Output:

`NaN`

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

• Google Chrome 1 and above
• Internet Explorer 3 and above
• Edge 12 and above
• Firefox 1 and above
• Opera 3 and above
• Safari 1 and above

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