Предмет: Алгебра, автор: lAndyl

логорифм log2(x²-1)>=3

Ответы

Автор ответа: nik12101
1
ОДЗ: x²-1>0
x>+-1
log2(x²-1)≥3
x²-1≥2³
x²≥8+1
x≥+-3
Похожие вопросы
Предмет: Алгебра, автор: Vika1232017
Предмет: Химия, автор: максончик9
Предмет: Английский язык, автор: dimadima2003
помогите пожалуйста
Exercise 1
Tick the correct sentences. If a tense is not correct, underline it and write the correct form.
Example:
I have never been seeing a ghost. have never seen
1) Look. The girl has been buying four dictionaries. ........................................................................
2) I haven't eaten anything since I arrived. ........................................................................
3) Let's stop for a while. You've driven all morning. ........................................................................
4) Have you ever been sleeping in a tent? ........................................................................
5) He's been sleeping too long. Wake him up! ........................................................................
6) I'm sorry. How long have you been waiting? ........................................................................
7) I've been meeting your sister several times. ........................................................................
8) I've been knowing him since he was born. ........................................................................
9) Help yourself. Mum has been making delicious toasts. ........................................................................
10) He is sunburnt. He's been lying on the beach all day. ........................................................................
11) I've gone to France for five years now. ........................................................................
12) Don't give up. You haven't been trying this way yet.