15
12345678910111213
#include <iostream>
#include <cmath>
using namespace std;
int main() {
float x,y;
cin>>x;
if (((sin(3*x))==0) || ((12*(x*x)+7*x-5)==0))
cout<< "Решений нет";
else {y=(2*(cos(3*x)/sin(3*x))-(1/(12*(pow(x,2))+7*x-5)));
cout<<y;}
return 0;
}
Cpp
INFO