Question

Wartość bezwzględna , 2 zadania w załączniku :)

Answer 1

13:

a)

|4| - 4 = 4 - 4 = 0

b)

x - 3*|x| = -2 - 3*|-2| = -2 - 3*2 = -2 - 6 = -8

c)

||7/2| - 6| = |7/2 - 6| = |7/2 - 12/2| = |- 5/2| = 5/2

d)

||x| + 2x| = ||-1| +2(-1)| = |1 - 2| = |-1| = 1

 

14:

a)

||x| - 3| - 1/2 = ||-5/2| - 3| - 1/2 = |5/2 - 6/2| - 1/2 = |-1/2| - 1/2 = 1/2 - 1/2 = 0

b)

|1-|x||+1/2 = |1-|-5/2||+1/2 = |1-5/2|+1/2 = |-3/2|+1/2 = 3/2 + 1/2 = 2

c)

||x| - 6|-|x| = ||-5/2| - 6| - |-5/2| = |5/2 - 12/2| - 5/2 = |-7/2| - 5/2 = 7/2 - 5/2 = 2/2 = 1