JavaScript Math LN2
Syntax & Examples

Math.LN2 static-property

The Math.LN2 property represents the natural logarithm of 2, which is approximately equal to 0.693.

Syntax of Math.LN2

The syntax of Math.LN2 static-property is:

Math.LN2

This LN2 static-property of Math natural logarithm of 2; approximately 0.693.


✐ Examples

1 Using Math.LN2 to calculate a natural logarithm

In JavaScript, we can use the Math.LN2 property to obtain the natural logarithm of 2.

For example,

  1. We create a variable logValue and set it to Math.LN2.
  2. We log logValue to the console using the console.log() method.

JavaScript Program

const logValue = Math.LN2;
console.log(logValue);

Output

0.6931471805599453

2 Using Math.LN2 in a logarithmic expression

In JavaScript, we can use the Math.LN2 property in logarithmic expressions to simplify calculations.

For example,

  1. We create a variable x and set it to 2.
  2. We calculate the natural logarithm of x using Math.log(x).
  3. We verify the result by comparing it with Math.LN2.
  4. We log both values to the console using the console.log() method.

JavaScript Program

const x = 2;
const logX = Math.log(x);
console.log(logX, Math.LN2);

Output

0.6931471805599453 0.6931471805599453

3 Using Math.LN2 in exponential decay calculations

In JavaScript, we can use the Math.LN2 property in exponential decay calculations to determine the half-life of a substance.

For example,

  1. We create variables initialAmount and time representing the initial amount of a substance and the time elapsed.
  2. We calculate the remaining amount of the substance using the formula initialAmount * Math.exp(-time * Math.LN2).
  3. The result is stored in the variable remainingAmount.
  4. We log remainingAmount to the console using the console.log() method.

JavaScript Program

const initialAmount = 100;
const time = 1;
const remainingAmount = initialAmount * Math.exp(-time * Math.LN2);
console.log(remainingAmount);

Output

50

Summary

In this JavaScript tutorial, we learned about LN2 static-property of Math: the syntax and few working examples with output and detailed explanation for each example.