Question

решить неравенство:))))))

Answer 1

3*9^x-10*3^x+3>=0
3^x=t
t>0
3t^2-10t+3>=0
t12=(10+-корень(100-36))/6=(10+-8)/6=3 1/3
3(t-3)(t-1/3)>=0
==============1/3=============3=============
++++++++++++++    ----------------------  ++++++++++
t<=1/3
3^x<=1/3
x<=-1
t>=3
3^x>=3
x>=1
x<=-1 x>=1
-------------------------
log^2 1/2 x + 2 log 1/2 x -3 >0
log1/2 x=t
x>0
t^2+2t-3>0
(t+3)(t-1)>0
===========-3============1===========
+++++++++++    ------------------- +++++++++++
t<-3 t>1
log1/2 x > 1
log1/2 x>log1/2 1/2
(1/2-1)(x-1/2)>0
x<1/2
log1/2 x<-3
log 1/2 x < log 1/2 8
(1/2-1)(x-8)<0
x-8>0
x>8

 x=(0 1/2) U (8 + бесконечность)