Question

Măcar unul dintre exerciții! Dau coroana, am nevoie urgent pana mâine ​

Answer 1

Răspuns:

Explicație pas cu pas:

4 ≤ 2x - 6 ≤ 10

10 ≤ 2x ≤ 16

5 ≤ x ≤ 8

A = [5, 8]

______________

4 < (2x - 4)/5 ≤ 8

20 < 2x - 4 ≤ 40

24 < 2x ≤ 44

12 < x ≤ 22

B = (12, 22]

______________

-5 < 3 - 5x < 5

-8 < -5x < 2

-2 < 5x < 8

-2/5 < x < 8/5

C = (-2/5, 8/5)

______________

I4 - 2xI < 3

-3 < 4 - 2x < 3

-7 < -2x < -1

1/2 < x < 7/2

D = (1/2, 7/2)

____________________

[1, 7) - [1, 5) = [5, 7)

______________

[1, 7) ∩ [1, 5) = [1, 5)