[자바/전산물리/수치해석] 5-point formula를 이용한 수치미분

소개글

자바로 구현한 5-point formula를 이용한 미분값을 구하기 위한 소스입니다.

목차

◈ 5-Point Formula 소스 (ver.01)
◈ 5-Point Formula 소스 분석(ver.01)
◈ 5-Point Formula 소스 (ver.02)
◈ 5P Formula ver01. 결과값
◈ 5-Point Formula Ver.02의 소스 분석
<첨부 1 - First Order>

본문내용

package chapter3;

////////////////////////////////////////////////////////////////////////////////////////////////
// //
// Program fine name ; HW01_Deriv_ver01.java //
// //
// Program by Won Jun, Chang who is CAU Physics 20020710. //
// //
///////////////////////////////////////////////////////////////////////////////////////////////

// An example of evaluating the derivatives with the
// 5-point formulas for f(x)=sin(x).


public class HW01_Deriv_ver01 {
static final int n = 100, m = 1;
public static void main(String argv[]){
double [] x = new double[n+1];
double [] f = new double[n+1];
double [] f1 = new double[n+1];
double [] f2 = new double[n+1];

// Assign constants, data points, and function

int k = 2;
double h = Math.PI/(2*n);
for (int i = 0; i <= n; ++i){
x[i] = h * i;
f[i] = Math.sin(x[i]);
}

// Calculate 1st-order and 2nd-order derivatives

f1 = firstOrderDerivative(h,f);
f2 = secondOrderDerivative(h,f);

참고 자료

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