De oplossingenverzameling
van | x − 3 | > 4 is
|
A. ] − 1 , [ |
B. ] 7 , [ |
C. ] − 1 , 7 [ |
D. \ [ − 7 , 7 ] |
E. \ [ − 1 , 7 ] |
F. \ ] − 1 , 7 [ |
[ 4-0519 - op net sinds 26.7.12-(E)-25.9.2024 ]
Translation in E N G L I S H
The solution set of
| x − 3 | > 4 is
|
A. ( − 1 , ∞) |
B. ( 7 , ∞) |
C. ( − 1 , 7 ) |
D. \ [ −7 , 7 ] |
E. \ [ −1 , 7 ] |
F. \ ( −1 , 7 ) |
Oplossing - Solution
\(\qquad |x-3|>4 \\
\Leftrightarrow\:\;x-3<-4\;\; or \;\;x-3>4\\
\Leftrightarrow\:\;x<-1\; \;or \;\;x>7\\
\Leftrightarrow\:\;\;x\in\;\mathbb{R}\;\backslash\;[-1,7]\)