Saved Bookmarks
| 1. |
Solve `|4-x|lt2`. |
|
Answer» We have, `|x|ltaiff-altxlta`. `therefore|4-x|lt2` `iff-2lt4-xlt2` `iff-2lt4-xand4-xlt2` `iff -2-4-xand-xlt2-4` `iff-6lt-xand-xlt-2` `iff 6gt x andxgt2`. `iff 2ltxlt6`. `therefore` solution set `={x inR:2ltxlt6}=(2,6)`. |
|