tentukan nilai |4-2x|<1

Question

Matematika Diposting : 2017-09-18 Diupdate : 2017-09-20 fauzan684

Pertanyaan

Answer 1

|4-2x|<1
Sifat
-1 < (4-2x)<1
-1-4< (4-4-2x)<1-4
-5 < (-2x)<-3

=> -2x <-3
=> x > -3/-2
=> x > 3/2

=> -2x >-5
=> x < -5/-2
=> x < 5/2

Jadi hp { 3/2

Answer 2

|4 - 2x| < 1
-1 < 4 - 2x < 1
-1 - 4 < 4 - 2x -4 < 1 - 4
-5 < -2x < -3
-5/-2 > -2x/2 > -3/-2
3/2 < x < 5/2

HP = {x | 3/2 < x < 5/2, € bilangan real}