Дружите тождество log4(6log6(7log7(5)))+1=log4(20)

log4(6log6(7log7(5)))+1=log4(20) log4(6log6(7log7(5))) = log4(20) - 1  log4(6log6(7log7(5))) = log4(20) - log4(4) log4(6log6(7log7(5))) = log4(20/4) log4(6log6(7log7(5))) = log4(5) 6log6(7log7(5)) = 5 log6(7log7(5)) = 5/6 = log6(6)^5/6 7log7(5) = (6)^5/6 log7(5)^7 = (6)^5/6 5^7 = 7^((6)^5/6) 78125 V 5775 тождество неверно