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hellfire1
@hellfire1
July 2022
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Помогите решить))) Пожалуйста
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mikael2
Log 1/2 (x²-1)≤-1 x²-1>0 x∈(-∞;-1)∪(1;∞)
-log2 (x²-1)≤-1 log2 (x²-1)≥1
x²-1≥2 x²≥3 (x+√2)(x-√2)≥0
/////////// ///////////
------ -√2---- -1 -----------------1-----√2---
/////////////////////// //////////////
x∈(-∞;-√2]∪[√2;∞)
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Answers & Comments
-log2 (x²-1)≤-1 log2 (x²-1)≥1
x²-1≥2 x²≥3 (x+√2)(x-√2)≥0
/////////// ///////////
------ -√2---- -1 -----------------1-----√2---
/////////////////////// //////////////
x∈(-∞;-√2]∪[√2;∞)