Вариант 9
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#include <iostream>
#include <cmath>
using namespace std;
int main()
{
double x, k, Z;
cout << "Вариант 9" << endl;
//cout << "Введите x" << endl;
cin >> x;
k = 1 + pow(x ,2);
setlocale(LC_ALL,"Russian");
if (k <= 0) {cout << "Решений нет";}
else {
if (fabs(cos (x)) == 0) {cout << "Решений нет";}
else { Z = log (fabs (cos(x))) / log (k) ;}
;}
cout << "Z = " << Z << endl;
return 0;
}
Cpp
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