Question

Надо доказать ㏒2 ()=1/ ㏒2

Answer 1

Llog(a)b=log(c)b/log(c)b
формула
log(2)(x+3)/(x+4)=1/log(2))(x+4)/(x+3)
log(2)(x+3/x+4)•(-log(2)(x+3/x+4))=1
-(log(2)(x+3/x+4))^2=1
(log(2)(x+3)/x+4))^2=-1
это не правильно???