public class Main {
public static void main(String[] args) {
double pi = 0;
double var = 1;
for (int i=0;i<=100000;i++) {
// TODO
pi=pi+1/var-1/(var+2);
var=var+4;
}
System.out.println(4*pi);
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拉格朗日乘子
public class Main {
public static void main(String[] args) {
double pi = 0;
double var = 1;
for (int i=0;i<=100000;i++) {
// TODO
pi=pi+1/var-1/(var+2);
var=var+4;
}
System.out.println(4*pi);
}
}