Question

Вычислите..........................

Answer 1

1
log(3)10*lg27=1/lg3 *3lg3=3
2
log(7)6*log(5)4*log(8)7*log(6)5=
=log(2)6/log(2)7 *2/log(2)5 *(log(2)7)/3*log(2)5/log(2)6=2/3
3
(log(5)36-log(5)12)/log(5)9=log(5)(36/12)/2log(5)3=log(5)3/2log(5)3=1/2