using System;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
int A, B, C, tmp;
Console.Write("Введите A: ");
A = Convert.ToInt32(Console.ReadLine());
Console.Write("Введите B: ");
B = Convert.ToInt32(Console.ReadLine());
Console.Write("Введите C: ");
C = Convert.ToInt32(Console.ReadLine());
tmp = A;
A = C;
C = B;
B = tmp;
Console.WriteLine("Новые значения:");
Console.WriteLine("A = " + A);
Console.WriteLine("B = " + B);
Console.WriteLine("C = " + C);
}
}
}
x
2
+
y
2
=
16
...
...
...
...
...
...
.
.
(
1
)
x + y = 4 (2)
rearrange (2) to y = 4 - x (could do x = 4 - y )
substitute y = 4 - x into (1)
hence:
x
2
+
(
4
−
x
)
2
=
16
⇒
x
2
+
16
−
8
x
+
x
2
=
16
and
2
x
2
−
8
x
+
16
−
16
=
0
⇒
2
x
2
−
8
x
=
0
factor and solve : 2x(x - 4 ) = 0
⇒
x
=
0
,
x
=
4
substitute these values into y = 4 - x , to find corresponding values of y.
x = 0 : y = 4 - 0 = 4 → (0 , 4)
x = 4 : y = 4 - 4 = 0 → (4 , 0 )
These are the points of intersection with the line x +y = 4 and the circle
x
2
+
y
2
=
16
Answer link
Объяснение: