![log_{0,9} (3- x)< 1 log_{0,9} (3- x)< 1](https://tex.z-dn.net/?f=log_%7B0%2C9%7D%20%283-%20x%29%3C%201)
ОДЗ:
0" alt="3-x>0" align="absmiddle" class="latex-formula">
-3" alt="-x>-3" align="absmiddle" class="latex-formula">
![x<3 x<3](https://tex.z-dn.net/?f=x%3C3)
![log_{0,9} (3- x)<log_{0,9} 0,9 log_{0,9} (3- x)<log_{0,9} 0,9](https://tex.z-dn.net/?f=log_%7B0%2C9%7D%20%283-%20x%29%3Clog_%7B0%2C9%7D%200%2C9)
0,9" alt="3- x> 0,9" align="absmiddle" class="latex-formula">
0,9-3" alt="- x> 0,9-3" align="absmiddle" class="latex-formula">
-2,1" alt="- x>-2,1" align="absmiddle" class="latex-formula">
![x<2,1 x<2,1](https://tex.z-dn.net/?f=x%3C2%2C1)
-------------(2,1)----------------
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------------------------(3)--------
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Ответ:
∞ ![;2,1) ;2,1)](https://tex.z-dn.net/?f=%3B2%2C1%29)