1897 . 246, π 4.

" ", "" " ". .
18.03.2013

LiveJournal Vkontakte Facebook Twitter

1...2...3 

log1 - x3 - log1 - x2 - 0.5 = 0.

: x = -5/4.


x + lg(1 + 2x) = xlg5 + lg6.

: x = 1.


log3x9 - 4log93x = 1.

: x = 3 x = 81.


lg2(100x) + lg2(10x) = 14 + lg1/x.

: x = 10-9/2 x = 10.


3lgx2 - lg2(-x) = 9.

: x = -1000.


lg2x - lgx2 = lg23 - 1.

: x = 10/3 x = 30.


1...2...3 
2009-2012 . " - !" - , . .
Rambler's Top100