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Text lesson

expm1()

Example

Provide the result of subtracting 1 from e^x for various values of x.

System.out.println(Math.expm1(0));
System.out.println(Math.expm1(1));
System.out.println(Math.expm1(10));
System.out.println(Math.expm1(4.8));
System.out.println(Math.expm1(Math.E));

Definition and Usage

The expm1() method yields the result of e^x – 1 for any given number $x$ .

Here, $e$ represents the base of the natural logarithm system, approximately 2.718282. In Java, the constant Math.E holds the value of $e$ .

Syntax

public static double expm1(double number)

Parameter Values

Parameter	Description
number	Needed: The value of x in the expression e^x – 1.

Technical Details

Returns	A double value representing the result of e^x – 1. for e^x – 1. a given number
Java Version	1.5