1/log(2)x -1=4*1/2*log(2)x
1-log(2)x=2log^2(2)x x>0 x/=1
пусть LOG(2)x=t
2t^2+t-1=0
D=1+8=9
t1=(-1-3)/4=-1 log(2)x=-1 x=1/2
t2=1/2 log(2)x=1/2 x=V2
log(x)2-1=4log(2)√x;
log(x)2-1=2log(2)x;
log(2)x=t;
1/t-1=2t;
2t²+t-1=0;
t²+(1/2)t-(1/2)=0;
t₁=-1;
t₂=1/2;
log(2)x=-1; x₁=1/2;
log(2)x=1/2; x₂=√2.
ответ: 1/2, √2.
1/log(2)x -1=4*1/2*log(2)x
1-log(2)x=2log^2(2)x x>0 x/=1
пусть LOG(2)x=t
2t^2+t-1=0
D=1+8=9
t1=(-1-3)/4=-1 log(2)x=-1 x=1/2
t2=1/2 log(2)x=1/2 x=V2
log(x)2-1=4log(2)√x;
log(x)2-1=2log(2)x;
log(2)x=t;
1/t-1=2t;
2t²+t-1=0;
t²+(1/2)t-(1/2)=0;
t₁=-1;
t₂=1/2;
log(2)x=-1; x₁=1/2;
log(2)x=1/2; x₂=√2.
ответ: 1/2, √2.