Javob: x
(2,3]
[11,12)
misol.
log ( x2 2
1
5x 6)
tengsizlikni yeching.
Yechish: Tengsizlikning aniqlanish sohasi x2-5x-6>0 yoki
(x+1)(x-6)>0 yoki x (
, 1)
(6,
bo`ladi.
Tengsizliklarni yeching
1. 1)
log 2 x 3;
log x3 2;
3) log 2,5 x 1;
4) log 3 (x 5) 2;
5) log 0,7 (2 x
0,3) 1;
6) log 1 (5 x 6) 2.
7
2. 1) lg( 4x 5)
lg( x
1);
2) log 0,3 (2x 3)
log 0,3 (x 2)
log 0,5 x
5) 3log x
log 2 (3
2.
2x);
4) 2
log 2 x 1;
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