Предмет: Математика, автор: сэм1996

log во второй степени (3x-7)<1

Ответы

Автор ответа: Санечка69
0

я думаю, что это не log во второй степени, а log (по основанию 2), т. е 2 чуть ниже.

Тогда имеем:

 log (по основанию 2)(3х-7)< log (по основанию 2) 2 , ( log (по основанию 2) 2=1)

0<3х-7<2,

7<3x<9,

7/3<x<3.

 Ответ: (2 целых 1/3; 3).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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