Question

решите неравенство с log

Answer 1

log3 x=t
t²-6t+5≥0
D=36-20=16
t1=5         t2=1
log3 x=5   log3 x=1
x=3^5       x=3
x=243
x∈(-∞;3]∪[243;+∞)  

Answer 2

log3 x=t
t²-6t+5≥0
D=36-20=16
t1=5 t2=1
log3 x=5 log3 x=1
x=3^5 x=3
x=243