|x| ≤ a is gelijkwaardig met ( a > 0 verondersteld ) |
A. x ≤ a ∨ x ≥ − a |
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B. − |x| ≤ x ≤ |x| | |
C. x ≤ a | |
D. x ∈ \ ]− a,+a[ | |
E. − a ≤ x ≤ +a |
[ 5-6910 - op net sinds 18.2.12-(E)-29.10.2023 ]
|x| ≤ a is equivalent with ( we assume a > 0 ) |
A. x ≤ a ∨ x ≥ − a |
---|---|
B. − |x| ≤ x ≤ |x| | |
C. x ≤ a | |
D. x ∈ \ (− a,+a) | |
E. − a ≤ x ≤ +a |