4.int1.cpp

#include "tasks.h"

double I1(int a, int b, int N) {
	double left = a;
	double right = left + double(abs(b - a)) / double(N);
	double I = 0;

	while (right < b){
		I += abs(right - left) * min(f(left), f(right)); //Íèæíèå ïðÿìîóãîëüíèêè
		left += double(abs(b - a)) / double(N);
		right += double(abs(b - a)) / double(N);
	}
	return I;
}