diff --git a/2025.05.02/07Ex/main.c b/2025.05.02/07Ex/main.c
index c426a06..11be590 100644
--- a/2025.05.02/07Ex/main.c
+++ b/2025.05.02/07Ex/main.c
@@ -20,7 +20,7 @@ int main(int argc, char *argv[])
 			sscanf(argv[1], "%lf", &x_0) == 1 &&
 			(sscanf(argv[2], "%lf", &eps) == 1 && (eps >= 0)) &&
 			((sscanf(argv[3], "%d", &m) == 1) && (m > 0)) &&
-			((sscanf(argv[4], "%d", &k) == 1) && ((0 <= k) && (k <= len_f))))
+			((sscanf(argv[4], "%d", &k) == 1) && ((0 <= k) && (k < len_f))))
 	) {
 		fprintf(stderr, "Usage: %s x_0 eps M k\n", argv[0]);
 		return -1;
diff --git a/2025.05.02/07Ex/solve.c b/2025.05.02/07Ex/solve.c
index 558c5c2..e7b1e6b 100644
--- a/2025.05.02/07Ex/solve.c
+++ b/2025.05.02/07Ex/solve.c
@@ -9,21 +9,16 @@ int t7_solve (
 		int m, double *x
 ) {
 	int it = 0;
-	double y = f(x_0);
-
-	if (fabs(y - x_0) - eps < DBL_EPSILON)
-	{
-		*x = x_0;
-		return 1;
-	}
 
 	for (it = 1; it <= m; ++it)
 	{
-		x_0 = y;
-		y = f(x_0);
+		const double y = f(x_0);
+		const double max = fabs((y < x_0) ? x_0 : y);
 		
-		if (fabs(y - x_0) - eps < DBL_EPSILON)
+		if (fabs(y - x_0) < eps * max) {
+			x_0 = y;
 			break;
+		}
 	}
 
 	if (it > m)