Uy » Online olimpiada » Matematika olimpiada » 11-sinf Matematika olimpiada №4 Matematika olimpiadaTuman 2022-2023 o'quv yili 11-sinf Matematika olimpiada №4 InfoMaster Avgust 19, 2024 49 Ko'rishlar 2 izohlar SaqlashSaqlanganOlib tashlandi 0 0 123456789101112131415161718192021222324252627282930 Vaqtingiz tugadi! 11-sinf Matematika olimpiada №4 2022-yil 12-oktyabr: 2022-2023 o'quv yilida tuman bosqichida tushgan savollar! 1 / 30 1. 32017 sonning oxirgi ikkita raqamini toping. A) 13 B) 63 C) 83 D) 03 2 / 30 2. f(x)=70cosxcos6x uchun boshlang`ich funksiya toping. A) −7cos5x−5cos7x+c B) 7cos5x−5cos7x+c C) 7sin5x−5sin7x+c D) 7sin5x+5sin7x+C 3 / 30 3. Bitta tekislikda yotuvchi n ta turli tog`ri chiziq o`tkazilgan. Ularning ixtiyoriy ikkitasi parallel emas va ixtiyoriy uchtasi bitta nuqtadan o`tmaydi ,ya`ni bitta nuqtada kesishmaydi. Bu to`g`ri chiziqlar tekislikni 1276 qismga ajratadi. n ni aniqlang? A) 52 B) 50 C) 51 D) 49 4 / 30 4. Agar ?(?) = ?2021 + 3?2020 + 3?2019 − ?2018 + 1 bo‘lsa, ni toping. A) 3 B) 1 C) 2 D) 0 5 / 30 5. Berilgan natural son 400 dan katta va 500 dan kichik. Uning raqamlari yig‘indisi 9 va u berilgan sonning raqamlari teskari tartibda yozilgan sonning 47/36 qismiga teng. Berilgan sonni toping. A) 423 B) 444 C) 433 D) 443 6 / 30 6. formula bilan berilgan sonli ketma-ketlikning dastlabki 20 ta hadining o‘rta arifmetigini toping. A) 20/3 B) 22/3 C) 23/6 D) 25/6 7 / 30 7. Muntazam uchburchak 36 ta yuzi 1 ga teng bo‘lgan kichkina muntazam uchburchaklardan iborat (chizmaga qarang!). ABC uchburchak yuzini toping. A) 10 B) 13 C) 11 D) 12 8 / 30 8. Natural son roppa-rosa 2 ta tub bo‘luvchiga, bu sonning kvadrati esa 45 ta turli natural bo‘luvchiga ega. Berilgan sonning kubi eng ko‘pi bilan nechta natural bo‘luvchiga ega bo‘lishi mumkin? A) 40 B) 81 C) 41 D) 91 9 / 30 9. ? soniga teskari bo‘lgan son ? ning 9% ini tashkil qiladi. ? ni toping. (?u yerda, ? > 0) A) 10/3 B) 13/3 C) 8/3 D) 16/3 10 / 30 10. Agar bo‘lsa sin²α ni toping. A) A B) B C) C D) D 11 / 30 11. Hisoblang: A) A B) C C) D D) B 12 / 30 12. Nargizada 2 ta olma va 3 ta nok bor. U 5 kun ketma-ket har kuni singliga bittadan meva beradi. Bu ishni necha usul bilan amalga oshirish mumkin? A) 12 B) 10 C) 8 D) 6 13 / 30 13. Tenglamani yeching: A) 0 B) 10/21 C) ∅ D) 29/462 14 / 30 14. ABCD - kvadrat, AC-diagonal. Agar AE=BE+CE ( a + b = c ) bo‘lsa, ∠AEB burchakni toping(chizmaga qarang!). A) 60 B) 50 C) 45 D) 55 15 / 30 15. ∠CAD = 2∠ACD, AC =13a, BD = 5a va AB = CD bo’lsa, 20⋅cos ∠ACD ni toping.(chizmaga qarang!) A) 19 B) 15 C) 17 D) 16 16 / 30 16. Arifmetik progressiyada ?2 = 12, ?7 − ?4 = 9 bo‘lsa, ?19 ni toping. A) 54 B) 63 C) 56 D) 61 17 / 30 17. Soddalashtiring: bunda, |?| < 1. A) 2-2a B) -2 C) 2a+4 D) 4-2a 18 / 30 18. Uchlari A(2; −3), B(6; −1), C(6; 4) va D(2; 2) nuqtalarda bo‘lgan ABCD to‘rtburchak yuzini toping. A) 16 B) 15 C) 18 D) 20 19 / 30 19. un ketma-ketlik quyidagicha berilgan: u1 = 1, un+1 = un + 8n. U holda, u50 −u30 ni toping. A) 6320 B) 6230 C) 5320 D) 6320 20 / 30 20. Raqamlari yig‘indisi 10 dan kam bo‘lmagan, raqamlari ko‘paytmasi esa 10 dan katta bo‘lmagan uch xonali sonlar nechta? A) 89 B) 96 C) 106 D) 100 21 / 30 21. O‘tkir burchakli uchburchakning ikki tomon uzunliklari ayirmasi 8, bu tomonlarning uchinchi tomondagi proyeksiyalari mos ravishda 8 va 20 ga teng. Berilgan uchburchakka tashqi chizilgan aylana radiusini toping. A) 83/6 B) 85/6 C) 35/3 D) 37/3 22 / 30 22. ABC uchburchakda ctgA+ctgB= 3 va AB= 12 bo‘lsa, ABC uchburchak yuzini toping. A) 521 B) 216 C) 123 D) 265 23 / 30 23. Tengsizliklar sistemasinining butun yechimlari sonini toping. A) 4 B) 5 C) 6 D) 7 24 / 30 24. BC = BE = CD ,∠DAE = 20°, ∠BCD = 60° ,∠ADE = ? (chizmaga qarang) A) 20° B) 40° C) 50° D) 30° 25 / 30 25. Agar ifodaning qiymatini toping. A) 20 B) 4 C) 0.8 D) 0.05 26 / 30 26. y = x² − 2x + 3 parabolaga y = 3 to‘g‘ri chiziqqa nisbatan simmetrik bo‘lgan parabola tenglamasini tuzing. A) y =-x² + 2x + 3 B) y = x² − 2x - 3 C) y =-x² + 2x - 3 D) y = -x² − 2x + 3 27 / 30 27. To‘g‘ri burchakli uchburchakning bir burchagi 60° ga teng. Bu burchakdan chiqarilgan bissektrisaning uzunligi 2 m. Uchburchakning gipotenuzasi uzunligini toping. A) √3 B) √5 +1 C) √5 D) 2√3 28 / 30 28. Soddalashtiring: A) A B) C C) D D) B 29 / 30 29. a2b5 = 620 tenglikni qanoatlantiruvchi nechta (?; ?) butun sonlar juftligi mavjud? A) 14 B) 10 C) 12 D) 8 30 / 30 30. Soatning minut mili 144° ga burilganda, soatning soat mili qanday burchakka burilada? A) 6° B) 18° C) 12° D) 9° 0% Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz