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Exotica
@Exotica
June 2021
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1)Найти значение выражения.
3sin[tex] \frac{ \pi }{6} + \sqrt{3} cos \frac{ \pi }{6} -tg \frac{ \pi }{4} [/tex]
2)Решить неравенство.
[tex] 9^{x+2} \leq 27[/tex],заранее спасибо.
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m11m
1) 3sin(π/6) +√3cos(π/6) - tg(π/4)=3*(1/2) + √3*(√3/2) - 1 =
=1.5 +1.5 -1=2
2) 9^(x+2)≤27
(3²)^(x+2)≤3³
2(x+2)≤3
x+2≤1.5
x≤1.5-2
x≤-0.5
2 votes
Thanks 1
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Answers & Comments
=1.5 +1.5 -1=2
2) 9^(x+2)≤27
(3²)^(x+2)≤3³
2(x+2)≤3
x+2≤1.5
x≤1.5-2
x≤-0.5