Question

JAVA 求 定不定积分

要求：用户给出方程，求出该方程的不定积分。。。就这么简单

Answer 1

public class Jifeng {
public Jifeng(int a,int b , int c,int l,int u){ h1 = a; h2 = b; h3 = c; lower = l; upper = u; } public double getResult(){ double result = 0 ; for(int i = 0 ; i < count ;i++){ double x = lower+(upper-lower)*i/((double)count); System.out.println(x); double fx = h1*x*x + h2*x + h3; System.out.println(fx); result+=fx/count; } return result; } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Jifeng temp = new Jifeng(1,1,1,0,1); System.out.println(temp.getResult());; }
private int h1; private int h2; private int h3; private int lower; private int upper; private static int count = 10000;}