Mavzu: Taqribiy integrallash formulasini tanlash, aniqligini baholash

Mavzu: Taqribiy integrallash formulasini tanlash, aniqligini baholash.

Reja: 1. Taqribiy integrallash formulasini tanlash 2. Simpson formulasi yordamida integralni taqribiy hisoblash.

{Simpson usuli} Program integral2(input,output); Uses crt; var a,b,h,s,J:real; i,n,k:integer;
function f(x:real):real; begin f:=ln(x*x+3*x+1); end; begin clrscr; write(‘quyi chegara a=’);
readln(a);
write(‘yuqori chegara b=’); readln(b);
write(‘bo’laqlar soni n=’); readln(n); h:=(b-a)/n; s:=f(a)+f(b); k:=1; for i:=2 to n do begin s:=s+(3+k)*f(a+(i-1)*h); k=-k end; J:=s*h/3; textcolor(2); writeln(‘integral qiymati J=’,J:3:4); end.

Masalalar:

1. Uchta son berilgan shu sonlar orasidan nechta musbat va manfiy son borligini aniqlovchi programma tuzilsin
#include
int main()
{
int a;
int b;
int c;
int i=0;
int x=0;
cout << " a ni kirit = "; cin >> a;
cout << " b ni kirit = "; cin >> b;
cout << " c ni kirit = "; cin >> c;
if (a>0)
i++;
else
x++;
if (b>0)
i++;
else
x++;
if (c>0)
i++;
else
x++;
cout << "Musbat sonlar soni " << i << " ga teng " << endl;
cout << " Manfiy sonlar soni " << x << " ga teng " << endl;
return 0;
}
2. Butun son berilgan Agar berilgan son musbat bo'lsa 1 ga oshiring aks holda 2 ga kamaytiring
Agar 0 ga teng bo'lsa 10 ni o'zlashtirsin Hosil bo'lgan sonni ekranga chiqaruvchi sonni kiriting
using namespace std;
int main()
{
int a;
cout << " a ni qiymatini kiriting = "; cin >> a;
switch (a)
{
case a>0: cout << ++a;
case a<0: cout << a-2;
case a=0: cout << " 10 ga teng ;
}
return 0;
}
3. A va B haqiqiy sonlar berilgan shu sonlarni shunday o'zgartiringki A soni kichik B soni katta bo'lsin
A va B ning qiymatini ekranga chiqarilsin
using namespace std;
int main()
{
int a,b;
cout << " a sonni qiymatini kiriting: = "; cin >> a;
cout << " b sonni qiymatini kiriting: = "; cin >> b;
if (a>b) {
cout << " a= " << b << endl;
cout << " b= " << a << endl;
}
else {
cout << " a= " << a << endl;
cout << " b= " << b << endl;
}
return 0;
}