Решите неравенство: Log(2x)0,25 > log(2)32x - 1
ОДЗ x>0 x≠1/2 x∈(0;1/2) U (1/2;∞( Перейдем к основанию 2 -2/log(2)(2x)>log(2)32x-1 log(2)+5-1+2/(log(2)x+1)<0<br>log(2)x=a a+4+2/(a+1)<0<br>(a²+a+4a+4+2)/(a+1)<0<br>(a²+5a+6)/(a+1)<0<br>a=+5a+6=0 a1+a2=-5 U a1*a2=6 a1=-3;a2=-2 a+1=0 a=-1 _ + _ + -----------------(-3)------------(-2)-----------(-1)---------------- a<-3⇒log(2)<-3⇒x<1/8<br>-2x∈(0;1/8) U (1/4;1/2)