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In this guide, you will learn about the Math pow() method in Java programming and how to use it with an example.
1. Math pow() Method Overview
Definition:
The pow() method of Java's Math class is utilized to calculate the power of a given base raised to an exponent.
Syntax:
Math.pow(double base, double exponent)Parameters:
- base: The base value.
- exponent: The exponent value to which the base will be raised.
Key Points:
- The result is base raised to the power of exponent.
- If the base is NaN or the exponent is NaN, then the result will be NaN.
- If the base is finite and the exponent is positive or negative infinity, then the result will be NaN.
- The method can produce results for negative bases and fractional exponents, keeping in mind the principles of mathematics.
2. Math pow() Method Example
public class PowExample {
public static void main(String[] args) {
System.out.println("2 raised to the power of 3: " + Math.pow(2, 3));
System.out.println("5 raised to the power of 0: " + Math.pow(5, 0));
System.out.println("2 raised to the power of -3: " + Math.pow(2, -3));
System.out.println("4 raised to the power of 0.5: " + Math.pow(4, 0.5));
System.out.println("-2 raised to the power of 3: " + Math.pow(-2, 3));
}
}
Output:
2 raised to the power of 3: 8.0 5 raised to the power of 0: 1.0 2 raised to the power of -3: 0.125 4 raised to the power of 0.5: 2.0 -2 raised to the power of 3: -8.0
Explanation:
In the example:
1. The number 2 raised to the power of 3 gives 8.
2. Any number raised to the power of 0 results in 1.
3. The number 2 raised to a negative exponent -3 results in 1/2^3, which is 0.125.
4. The number 4 raised to the power of 0.5 represents a square root, giving the value 2.
5. The negative base -2 raised to the power of 3 results in -8, following the rules of multiplying negative numbers.
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