From cbcda0637624bbd42e882973312b4c72743ed7da Mon Sep 17 00:00:00 2001
From: aaricee <>
Date: Fri, 8 Aug 2025 14:53:25 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9EFunction?=
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---
 Hello.java | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/Hello.java b/Hello.java
index b8a5adf..64a2282 100644
--- a/Hello.java
+++ b/Hello.java
@@ -15,4 +15,46 @@ public class Hello
     {
         return a+b;
     }
+
+    /**
+     * 求解二元一次方程 ax + b = 0 的解
+     * @param a 方程系数a，不能为0
+     * @param b 方程系数b
+     * @return 方程的解x
+     * @throws IllegalArgumentException 当a为0时抛出，因为此时方程无解或有无穷多解
+     */
+    public static double solveLinearEquation(double a, double b) throws IllegalArgumentException {
+        if (a == 0) {
+            throw new IllegalArgumentException("Coefficient 'a' cannot be zero in a linear equation");
+        }
+        return -b / a;
+    }
+
+    /**
+     * 求解二元一次方程组：
+     * a1x + b1y = c1
+     * a2x + b2y = c2
+     * 
+     * @param a1 第一个方程x的系数
+     * @param b1 第一个方程y的系数
+     * @param c1 第一个方程常数项
+     * @param a2 第二个方程x的系数
+     * @param b2 第二个方程y的系数
+     * @param c2 第二个方程常数项
+     * @return 包含x和y的解的数组，格式为[x, y]
+     * @throws IllegalArgumentException 当方程组无解或有无穷多解时抛出
+     */
+    public static double[] solveLinearSystem(double a1, double b1, double c1, 
+                                            double a2, double b2, double c2) throws IllegalArgumentException {
+        double determinant = a1 * b2 - a2 * b1;
+        
+        if (determinant == 0) {
+            throw new IllegalArgumentException("The system of equations has no unique solution (either no solution or infinite solutions)");
+        }
+        
+        double x = (b2 * c1 - b1 * c2) / determinant;
+        double y = (a1 * c2 - a2 * c1) / determinant;
+        
+        return new double[]{x, y};
+    }
 }
\ No newline at end of file
-- 
Gitee