The Math.exp()
method returns e (Euler's constant) raised to the given power. It is equivalent to ex in mathematics.
Example
// 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:
- ex 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: