a^c>2a^2
log(a^c)>log(2a^2)
c*(log a)>(log 2+2*(log a))
c>(log 2+2*(log a))/(log a)=((log 2)/(log a)+2)
c>((log 2)/(log a)+2)
怎样将指数转化为对数a^c>2a^2 求c怎样转化为对数?有什么办法?老是搞不懂,右边的2要怎么转?
a^c>2a^2
log(a^c)>log(2a^2)
c*(log a)>(log 2+2*(log a))
c>(log 2+2*(log a))/(log a)=((log 2)/(log a)+2)
c>((log 2)/(log a)+2)