JavaScript | Math.expm1() function
Math.expm1() is an inbuilt function in JavaScript which is used to get the value of ep-1, 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.expm1(p)
Parameter: This function accepts a single parameter p, which is the parameter and it is any number.
Returns: It return the value of ep-1, where p is any given number as parameter.
Example:
Input :Math.expm1(0) Output : 0
Explanation:
Here the value of parameter p is 0, So after putting the value 0 instead of p in ep-1
then its value becomes 0.
Let’s see JavaScript program:
Example
<script> // Here different values is being taken as // as parameter of Math.expm1() function. document.write(Math.expm1(0) + "<br>" ); document.write(Math.expm1(1) + "<br>" ); document.write(Math.expm1(2) + "<br>" ); document.write(Math.expm1(-1) + "<br>" ); document.write(Math.expm1(5) + "<br>" ); document.write(Math.expm1(2.2) + "<br>" ); document.write(Math.expm1(-3.2) + "<br>" ); </script> |
Output:
0 1.718281828459045 6.38905609893065 -0.6321205588285577 147.4131591025766 8.025013499434122 -0.9592377960216338
<script> // Here alphabet parameter give error. document.write(Math.expm1(C)); </script> |
Output:
Error: C is not defined
<script> // Here parameter as a string give NaN. document.write(Math.expm1( "geeksforgeeks" )); </script> |
Output:
NaN
Application: Whenever we need to find the value of ep-1, where p is any given number that time we take the help of Math.expm1() function in JavaScript.
<script> // Here different numbers are being taken as parameter // from 0 to 9 for Math.expm1() function. for (i = 0; i < 10; i++) { console.log(Math.expm1(i)+ "<br>" ); } </script> |
Output:
0 1.718281828459045 6.38905609893065 19.085536923187668 53.598150033144236 147.4131591025766 402.4287934927351 1095.6331584284585 2979.9579870417283 8102.083927575384
Supported Browsers: The browsers supported by JavaScript Math.expm1() function are listed below:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari
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Improved By : ManasChhabra2