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Kazakhstan
Теңсіздікті шешіңіз \( \cos 3 x \geq \frac{2}{3} \) \( \left(-\frac{1}{3} \arccos \frac{2}{3}+\frac{2 \pi n}{3} ; \frac{1}{3} \arccos \frac{2}{3}+\frac{2 \pi n}{3}\right), n \in \mathbb{Z} \) \( \left[-\frac{1}{3} \arccos \frac{2}{3}+\frac{2 \pi n}{3} ; \frac{1}{3} \arccos \frac{2}{3}+\frac{2 \pi n}{3}\right], n \in \mathbb{Z} \) \( \left[-\frac{1}{3} \arccos \frac{2}{3}+\frac{\pi n}{3} ; \frac{1}{3} \arccos \frac{2}{3}+\frac{\pi n}{3}\right], n \in \mathbb{Z} \) \( \left[\frac{1}{3}\left(\pi-\arccos \frac{2}{3}\right)+\frac{2 \pi n}{3} ; \frac{1}{3} \arccos \frac{2}{3}+\frac{2 \pi n}{3}\right], n \in \mathbb{Z} \)
Trigonometry Oct 31, 2024
3. Тенсіздікті шешіңіз: \( 2 \cos (-x)<1 \) \( \left(-\frac{5 \pi}{3}+2 \pi n ;-\frac{\pi}{3}+2 \pi n\right), n \in \mathbb{Z} \) 3) \( \left(\frac{\pi}{3}+\pi n ; \frac{5 \pi}{3}+\pi n\right), n \in \mathbb{Z} \) -) \( \left(\frac{\pi}{3}+2 \pi n ; \frac{5 \pi}{3}+2 \pi n\right), n \in \mathbb{Z} \) ) \( \left(-\frac{5 \pi}{3}+\pi n ;-\frac{\pi}{3}+\pi n\right), n \in \mathbb{Z} \)
Trigonometry Oct 31, 2024
5. Тенсіздікті шешіңіз: \( \sqrt{2} \sin \left(\frac{\pi}{4}+\frac{x}{2}\right)<1 \) A) \( -3 \pi+4 \pi n<x<4 \pi n, n \in \mathbb{Z} \) B) \( 3 \pi+4 \pi n<x<4 \pi n, n \in \mathbb{Z} \) C) \( \pi+4 \pi n<x<4 \pi n, n \in \mathbb{Z} \) D) \( -\frac{\pi}{3}+4 \pi n<x<4 \pi n, n \in \mathbb{Z} \)
Trigonometry Oct 31, 2024
4. Теңсіздікті шешіңіз: \( \sin \left(2 x+\frac{2 \pi}{3}\right)>-\frac{\sqrt{3}}{2} \) A) \( \frac{3 \pi}{2}+\pi n<x<\frac{4 \pi}{3}+\pi n, n \in \mathbb{Z} \) B) \( \frac{\pi}{2}+\pi n<x<\frac{\pi}{3}+\pi n, n \in \mathbb{Z} \) C) \( -\frac{\pi}{2}+\pi n<x<\frac{\pi}{3}+\pi n, n \in \mathbb{Z} \) D) \( -\frac{\pi}{2}+2 \pi n<x<\frac{\pi}{3}+2 \pi n, n \in \mathbb{Z} \)
Trigonometry Oct 31, 2024
Теңсіздікті шешіңіз: \( \sqrt{2}-2 \sin x>0 \) \( -\frac{5 \pi}{3}+2 \pi n<x<\frac{\pi}{3}+2 \pi n, n \in \mathbb{Z} \) \( -\frac{5 \pi}{4}+\pi n<x<\frac{\pi}{4}+\pi n, n \in \mathbb{Z} \) \( \frac{\pi}{4}+2 \pi n<x<\frac{5 \pi}{4}+2 \pi n, n \in \mathbb{Z} \) \( -\frac{5 \pi}{4}+2 \pi n<x<\frac{\pi}{4}+2 \pi n, n \in \mathbb{Z} \)
Trigonometry Oct 31, 2024
Найдите пересечение числовых промежутков. \[ (-9 ; 7) \text { и }[-3,1 ;+\infty) \] Ваш ответ:
Algebra Oct 31, 2024
Найдите пересечение числовых промежутков. \[ (-\infty ;-3,3] \text { и }(-11 ; 11) \] Ваш ответ:
Algebra Oct 31, 2024
Теңсіздікті шешініз: \( \sin x \geq \frac{1}{2} \) \( \left[\frac{\pi}{3}+2 \pi n ; \frac{2 \pi}{3}+2 \pi n\right], n \in \mathbb{Z} \) \( \left[\frac{\pi}{6}+\pi n ; \frac{5 \pi}{6}+\pi n\right], n \in \mathbb{Z} \) \( \left[\frac{\pi}{6}+2 \pi n ; \frac{5 \pi}{6}+2 \pi n\right], n \in \mathbb{Z} \) \( \left[-\frac{\pi}{6}+2 \pi n ; \frac{5 \pi}{6}+2 \pi n\right], n \in \mathbb{Z} \)
Trigonometry Oct 31, 2024
О. Қосындынын мәнін табыңыз: \( -68-66-\ldots+172+174 \) 6496 6462 6448
Arithmetic Oct 31, 2024
Ғаниде 100 және 200 теңгелік 24 монета бар. Оған 3500 теңге қажет олды, бірақ ол ақшасын санағанда 200 тг жетпейтінін байқады. Ғаниде еше 100 теңгелік монета бар екендігін анықтайтын теңдеуді құрыңыз. x+2(24-x)=33 3) \( x+2(24-x)=35 \)
Algebra Oct 31, 2024
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