2-§ Integrallarni taqribiy hisoblash usullari, samaradorligi. Matrisalarni ko’paytirish. Determinantni hisoblash

Dastur kodi quyidagicha bo’ladi.
#include
using namespace std;
#define N 4
int determinantOfMatrix(int mat[N][N], int n)
{
int num1, num2, det = 1, index,
total = 1;
int temp[n + 1];
for (int i = 0; i < n; i++)
{
index = i;
while (index < n && mat[index][i] == 0)
{
index++;
}
if (index == n) {
continue;
}
if (index != i)
{
for (int j = 0; j < n; j++)
{
swap(mat[index][j], mat[i][j]);
}
det = det * pow(-1, index - i);
}
for (int j = 0; j < n; j++)
{
temp[j] = mat[i][j];
}
for (int j = i + 1; j < n; j++)
{
num1 = temp[i];
num2 = mat[j][i];
for (int k = 0; k < n; k++)
{
mat[j][k]
= (num1 * mat[j][k]) - (num2 * temp[k]);
}
total = total * num1; }
}
for (int i = 0; i < n; i++)
{
det = det * mat[i][i];
}
return (det / total); }
int main()
{
int mat[N][N] = { { 1, 0, 2, -1 },
{ 3, 0, 0, 5 },
{ 2, 1, 4, -3 },
{ 1, 0, 5, 0 } };
cout<<"Determinant of the matrix is :"<<
determinantOfMatrix(mat, N);
return 0;
}

Takrorlash uchun savol va topshiriqlar

1. 
   Takrorlanish operatorlarini tushuntirib bering
   
2. 
   Integralni to’g’ri to’rtburchaklar usulida taqribiy hisoblashni tushuntirib bering
   
3. 
   Integralni to’g’ri trapetsiya usulida taqribiy hisoblashni tushuntirib bering
   
4. 
   Integralni to’g’ri Simpson usulida taqribiy hisoblashni tushuntirib bering
   
5. 
   Integralni taqribiy hisoblashni usullarini tahlil qiling
   
6. 
   Matritsalarni ko’paytirish algorimtlarini tushuntirib bering