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HomeJavajavaTutorialCalculate the natural logarithm using Java's Math.log() function

Use Java's Math.log() function to calculate the natural logarithm

Natural logarithm (Natural logarithm) is one of the common logarithm types in mathematics. In the Java programming language, you can use the Math.log() function to calculate the natural logarithm. The usage of this function is introduced below and some code examples are given.

Math.log() function is a static method in Java, used to calculate the logarithm with base e. This function accepts a parameter x and returns the natural logarithm of x. Expressed in mathematical notation as ln(x).

The following is the syntax of the Math.log() function:
public static double log(double x)

Next, let’s look at some code examples showing Math.log() Function usage.

Example 1:

double result = Math.log(10.0);
System.out.println(result);

Output result: 2.302585092994046

Example 2:

double x = 5.0;
double result = Math.log(x);
System.out.println(result);

Output result: 1.6094379124341003

Example 3:

double base = Math.E;
double x = 100.0;
double result = Math.log(x) / Math.log(base);
System.out.println(result);

Output result: 4.605170185988092

In the above example, we can see that using the Math.log() function to calculate the natural logarithm is very simple, just pass in the value to be calculated as a parameter That’s it. The result is a value of type double.

It should be noted that if the parameter passed in is a negative number or 0, the Math.log() function will return negative infinity (-∞). In addition, if the argument is NaN or positive infinity (∞), the result will also return NaN or positive infinity accordingly.

To summarize, you can easily calculate the natural logarithm using Java’s Math.log() function. Its use is very simple, just pass in the value that requires the logarithm as a parameter. By rationally using this function, we can quickly calculate the natural logarithm of various values ​​in programming.

I hope the above introduction and examples can help you understand the usage of the Math.log() function. In actual programming, you can use this function to calculate various natural logarithms according to your needs to achieve your purpose.

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