【HC】高数（Java）
1、代码。package com.zxj.reptile.utils.number; public class Complex { private double real;//实数 private double image;//虚数 public Complex() { real = 0; image = 0; } public Complex(double real, double image) { this.real = real; this.image = image; } //加：(a+bi)+(c+di)=(a+c)+(b+d)i public Complex add(Complex complex) { double real = complex.getReal(); double image = complex.getImage(); double newReal = this.real + real; double newImage = this.image + image; return new Complex(newReal, newImage); } //减：(a+bi)-(c+di)=(a-c)+(b-d)i public Complex sub(Complex complex) { double real = complex.getReal(); double image = complex.getImage(); double newReal = this.real - real; double newImage = this.image - image; return new Complex(newReal, newImage); } //乘：(a+bi)(c+di)=(ac-bd)+(bc+ad)i public Complex mul(Complex complex) { double real = complex.getReal(); double image = complex.getImage(); double newReal = this.real * real - this.image * image; double newImage = this.image * real + this.real * image; return new Complex(newReal, newImage); } //乘：a(c+di)=ac+adi public Complex mul(double multiplier) { return mul(new Complex(multiplier, 0)); } //除：(a+bi)/(c+di)=(ac+bd)/(c^2+d^2) +((bc-ad)/(c^2+d^2))i public Complex div(Complex complex) { double real = complex.getReal(); double image = complex.getImage(); double denominator = real * real + image * image; double newReal = (this.real * real + this.image * image) / denominator; double newImage = (this.image * real - this.real * image) / denominator; return new Complex(newReal, newImage); } //欧拉公式 e^(ix)=cosx+isinx public static Complex euler(double x) { double newReal = Math.cos(x); double newImage = Math.sin(x)http://cdn.u1.huluxia.com/g3/M02/36/D9/wKgBOV3H0BCAdrPmAAEQAHDV8wo255.jpg
http://cdn.u1.huluxia.com/g3/M02/36/D9/wKgBOV3H0BGAJEPXAAB7c6R6rKQ489.jpg
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