Using electron in a formula in java

Question

I'm trying to write a Java program that can take values and put them into a formula involving electron. How can I calculate e^x in Java?

See this [article](https://www.geeksforgeeks.org/program-to-efficiently-calculate-ex/). — Makdous, May 05 '20 at 14:37
Does this answer your question? [Calculate e^x without inbuilt functions in Java](https://stackoverflow.com/questions/26140238/calculate-ex-without-inbuilt-functions-in-java) or [Recursively calculate e^x with Java](https://stackoverflow.com/questions/22065279/recursively-calculate-ex-with-java-using-maclaurin-series). — U880D, May 05 '20 at 15:02

score 1 · Answer 1 · answered May 05 '20 at 13:34

1

you can use java.lang.Math.exp() method to calculate e^x. here is an example

`
public static void main(String[] args) 
{
    double a = 2.0;
    System.out.println(Math.exp(a));
}
//output = 7.38905609893065
`

you can read more about this using this link. https://www.javatpoint.com/java-math-exp-method

answered May 05 '20 at 13:34

Nuwan Harshakumara Piyarathna

212
5
14

Thanks. Its work – berlianafd May 05 '20 at 14:33

score 0 · Answer 2 · answered May 05 '20 at 13:34

0

You could use Math.exp().

Example:

import java.lang.Math;

// inside main
Math.exp(1.0);        // e^1
Math.exp(1.6);        // e^1.6

answered May 05 '20 at 13:34

Animesh Sahu

7,445
2
21
49

Thnks. It work – berlianafd May 05 '20 at 14:34

score -1 · Answer 3 · edited May 05 '20 at 16:18

-1

import java.lang.Math; 

class Answer { 

    // driver code 
    public static void main(String args[]) 
    { 
        double a = 30; 
        double b = 2; 
        System.out.println(Math.pow(a, b)); 

        a = 3; 
        b = 4; 
        System.out.println(Math.pow(a, b)); 

        a = 2; 
        b = 6; 
        System.out.println(Math.pow(a, b)); 
    } 

//you can use Math.pow(e,x);

edited May 05 '20 at 16:18

papaya

1,505
1
13
26

answered May 05 '20 at 13:07

Arunoday kumar

1
4

You did a valid guess but OP was definitely looking for _exponential_ function `Math.exp(double x)` :) – Nowhere Man May 05 '20 at 13:51
If someone use Math.pow(a,b) to calculate e^x ,use Math.E as e.But Math.exp() method is more suitable for this. – Nuwan Harshakumara Piyarathna May 05 '20 at 14:52

Using electron in a formula in java

3 Answers3