JavaScript Math.exp()

// calculate e (Euler's constant) power to 2
var value = Math.exp(2);

console.log(value); 

//Output: 7.38905609893065  

exp() Syntax

The syntax of the exp() method is:

Math.exp(x)

Here, exp() is a static method. Hence, we need to access the method using the class name, Math.

exp() Parameters

The exp() method takes in:

• x - a number

exp() Return Value

The exp() method returns:

• e^x for argument x, where e is Euler's constant (2.71828).
• NaN for non-numeric arguments.

Example 1: JavaScript Math.exp()

// calculate e raised to the power of 1
var value1 = Math.exp(1);

console.log(value1); 

// calculate e raised to the power of 2
var value2 = Math.exp(2);

console.log(value2); 

// calculate e raised to the power of 5
var value3 = Math.exp(5);

console.log(value3); 

Output

2.718281828459045
7.38905609893065
148.4131591025766

In the above example,

• Math.exp(1) - computes e (Euler's constant) raised to the power of 1 i.e. e1
• Math.exp(2) - computes e (Euler's constant) raised to the power of 2 i.e. e2
• Math.exp(5) - computes e (Euler's constant) raised to the power of 5 i.e. e5

Example 2: exp() With 0

// calculate e raised to the power of 0
var value = Math.exp(0);

console.log(value);

// Output: 1

In the above example, we have used the exp() method to compute e (Euler's constant) raised to the power of 0 i.e. e0.

The output 1 indicates that e raised to the power 0 is 1 i.e. e0 = 1.

Example 3: exp() With Negative Numbers

// calculate e raised to -1 
var value = Math.exp(-1);

console.log(value);

// Output: 0.36787944117144233

In the above example, we have used the exp() method to compute e (Euler's constant) raised to the power of -1 i.e. e-1.

The output indicates that e-1 is a positive number 0.36787944117144233.

Recommended Readings:

• Math.log()
• Math.expm1()