voooooooooot tttttttttttt
1) lg10=1; lg1000=3; ln e=1; ln e³=3.
2) log a (c)=3*x; log 6(1)=0.
3) log a (a/b)=log a (a)-log a (b)=1-8=-7; log a (√(a*b))=log a (√a)+log a(√b)=0,5+4=4,5.
