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: a = , b , chislo vyprobuvan .
- Userednenyy integral .
program MonteCarlo;
uses
crt;
const k=100;
Var a,b,c,d,ng,vg,x,y,s,integral: real;
n,i,j: integer;
integr:array[1..k]of real;
Function f(x,y:real):real;
Begin
f:=Sqrt(x+y);
end;
Function nm(x:real):real;
Begin
nm:=3*x;
end;
Function vm(x:real):real;
Begin
vm:=8*x;
end;
BEGIN
clrscr;
writeln('Vvedit znachennya granyts integruvannya ');
write('a='); readln(a);
write('b='); readln(b);
writeln('Vvedit chyslo vyprobuvan:');
readln(n);
c:=nm(a);
d:=vm(b);
randomize;
for j:=1 to k do
begin
s:=0; integral:=0;
For i:=1 to n do
begin
x:=a+(b-a)*random;
y:=c+(d-c)*random;
ng:=nm(x);
vg:=vm(x);
If (y <= vg) and(y >= ng) then s:=s + f(x, y);
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end;
integr[j]:=(b-a)*(d-c)*s/n;
writeln(integr[j]:10:4);
end;
for j:=1 to k do
Integral:=integral+ integr[j];
writeln('Userednenyy integral=',(integral/k):10:4);
readln;
END.
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