Предмет: Алгебра, автор: kunetsu

lg^2b+2lgb>3
Please

Ответы

Автор ответа: MizoriesKun

Lg^2b+2lgb>3 замена Lg b=а ОДЗ b >0

а²+2а-3 >0

D=4+12=16
a=(-2+4)/2=1 Lg b =1 ⇒ b=10
a=(-2-4)/2=-3 Lg b= -3 ⇒ b=0,001
+ - +
__________ -3_____1_________

b∈ (0 ;0,001)∪(10;+∞)

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lg^2b+2lgb>3 Please

Ответы

lg^2b+2lgb>3
Please