Задание 2. Найдите нули функции. 1) y = x 2) y = 2x - 6 3) y = 1/2x + 4 4) y = x^2 - 9 5) y = x^2 + 5x 6) y = (x-2)/3 7) y = x^2 - 4x + 4 8) y = x^3 - x

Задание 2. Найдите нули функции.

Чтобы найти нули функции, нужно решить уравнение y = 0 для каждой функции.

1. y = x

   x = 0

2. y = 2x - 6

   2x - 6 = 0 => 2x = 6 => x = 3

3. y = 1/2x + 4

   1/2x + 4 = 0 => 1/2x = -4 => x = -8

4. y = x^2 - 9

   x^2 - 9 = 0 => x^2 = 9 => x = ±3

5. y = x^2 + 5x

   x^2 + 5x = 0 => x(x + 5) = 0 => x = 0 или x = -5

6. y = (x-2)/3

   (x-2)/3 = 0 => x - 2 = 0 => x = 2

7. y = x^2 - 4x + 4

   x^2 - 4x + 4 = 0 => (x - 2)^2 = 0 => x = 2

8. y = x^3 - x

   x^3 - x = 0 => x(x^2 - 1) = 0 => x = 0, x = 1, x = -1