решите неравенство 90,5^(x^2-3)0. Created by teenart9. matematika-ru

2)^x+2>0...

teenart9 @teenart9

August 2022 1 1 Report

решите неравенство
90,5^(x^2-3)<27
и
(1/4)^x-3(1/2)^x+2>0

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sedinalana

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В 1 явно ошибка
-------------------------------
(1/2)^2x-3*(1/2)^x+2>0(1/2)^x=a
a²-3a+2>0
a1+a2=3 U a1*a2=2⇒a1=1 U a2=2
a<1⇒(1/2)^x<1⇒x>0
a>2⇒(1/2)^x>2⇒x<-1
x∈(-∞;-1) U (0;∞)

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