Uy » Online olimpiada » Matematika olimpiada » 10-sinf Matematika olimpiada №3 Matematika olimpiadaViloyat 2021-2022 o'quv yili 10-sinf Matematika olimpiada №3 InfoMaster Avgust 19, 2024 74 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 0 0 12345678910111213141516171819202122232425 Vaqtingiz tugadi! 10-sinf Matematika olimpiada №3 2021-2022 o'quv yili viloyat bosqichida tushgan savollar. 1 / 25 1. tengsizlikning yechimlari joylashgan interval uzunligini toping. A) 1,45 B) 1,25 C) 1,15 D) 1,35 2 / 25 2. [2x-1]=x tenglamani butun yechimlar sonini toping. Bu yerda [a]− a sonining butun qismi. A) 1 ta B) 4 ta C) 3 ta D) 2 ta 3 / 25 3. ABCD to‘rtburchakda АВ = CD = 9 va bu to‘rtburchakka radiusi 4 ga teng aylana ichki chizilgan. ABCD to‘rtburchak yuzini toping. A) 36 B) 81 C) 144 D) 72 4 / 25 4. Agar cos ∠A = 1/5 va sin∠B = 1/2 bo‘lsa, АВС uchburchakning mos ravishda А va В uchlaridan tushirilgan balandliklar nisbatini toping. A) 5√2/5 B) 5√3/12 C) 5√6/24 D) 2/5 5 / 25 5. ABCD to‘rtburchakda А va В burchaklar- to‘g‘ri, tg∠D = 3/4 va ВС = AD/2 = АВ + 2 bo‘lsa, АС ni toping. A) 9 B) 15 C) 8 D) 10 6 / 25 6. ?(? − 1) = 2?(5? + 4) va ?(2? − 1) = 4? + 4 bo‘lsa, ?(?) ni toping A) 20x+48 B) 0 C) x+25 D) 20x+50 7 / 25 7. ?² + |? − 3| ≤ |?2 + ?| − 3 tengsizlikni yeching. A) x>3 B) x ≤ 3 C) 3 ≤ x D) x<0 8 / 25 8. Agar bo‘lsa, |xyz| ni toping. A) 100 B) 1000 C) 500 D) 800 9 / 25 9. ABC – gipotenuzasi AB bo‘lgan to‘g‘ri burchakli uchburchak. Gipotenuzaning ikki tomon davomida AB to‘g‘ri chiziqda AK = AC va BM = BC shartlar bilan kesmalar ajratilgan. KCM burchakni toping. A) 135° B) 150° C) 120° D) 90° 10 / 25 10. x, y sonlari (x² + 1)(y² + 1) + 2(x − y)(1 − xy) = 4(1 + xy) tenglikni qanoatlantiradi |1 + x| ∙ |1 − y| ni toping. A) 9 B) 2 C) 3 D) 1 11 / 25 11. Tenglamani yeching: 3x+3 + 8·3x+2 = 33 A) 0 B) -2 C) 1 D) -1 12 / 25 12. Soddalashtiring: (4cos² 9° −3)(4cos² 27° −3)·ctg9° A) sin18° B) tg9° C) 1 D) 2cos² 9° 13 / 25 13. a,b,c−ABC uchburchakning tomonlari. Agar a4 + b4 + c4 + 32 = 2(a²b² + b²c² + a²c²) bo‘lsa, ABC uchburchak yuzini toping. A) √2 B) √3 C) 1 D) 2√2 14 / 25 14. Agar bo‘lsa, ?(0) − ?(5) ayirmani toping. A) -26 B) -25 C) -24 D) -27 15 / 25 15. Qavariq to‘rtburchakning diagonallari 3 va 4 ga teng. Agar qarama qarshi tomonlarining o‘rtalarini tutashtirishdan hosil bo‘lgan kesmalar uzunliklari o‘zaro teng bo‘lsa, qavariq to‘rtburchakning yuzini toping. A) 6 B) 8 C) 7 D) 5 16 / 25 16. Agar ? > 0, ? + ?² = 7,25; ?² − ? = 2 va ?² = √(? − 1) ∙ √(2 − ?) bo‘lsa, ?(√(? − 1) + √(2 − ?)) ning qiymatini toping. A) 6 B) 4 C) 7 D) 5 17 / 25 17. Agar ?1 = 6? − 6 va у2//?1 hamda у2 to‘g‘ri chiziq ?(6; 6) nuqtadan o‘tsa, ?2 ni toping. A) −6? + 42 B) −6? + 6 C) 6? − 30 D) 6? − 24 18 / 25 18. englikni qanoatlantiradigan ? ning eng kichik qiymatini toping. A) 3 B) 0 C) -1 D) 1 19 / 25 19. 102022 − 22021 ayirmani 24 ga bo‘lgandagi qoldiqni toping. A) 0 B) 16 C) 12 D) 8 20 / 25 20. Agar ni toping. A) 0.8 B) 0.81 C) 0.96 D) 0.9 21 / 25 21. tenglama nechta yechimga ega, agar x ∈ (0; 50)? A) 16 B) 14 C) 15 D) 17 22 / 25 22. ?(?) = ?5 − 7?4 + 3?3 − ? + 2 ko‘phadni ?2 + ? ga bo‘lgandagi qoldiqni aniqlang. A) 8? + 2 B) 10? + 2 C) 4? + 2 D) 6? + 2 23 / 25 23. (?² − 2? + 3)(?² + 6? + 12) = 6 bo‘lsa, ? + ? ni toping. A) -2 B) 2 C) 3 D) -3 24 / 25 24. ABC uchburchakning AC tomonida D nuqta olingan, bunda ∠ABC = ∠BDC. Agar AD = 10, CD = 8 bo‘lsa, BC ni toping. A) 9 B) 15 C) 12 D) 10 25 / 25 25. Ayirmasi noldan farqli bo‘lgan arifmetik progressiyaning 4-hadidan boshlab 14- hadigacha bo‘lgan hadlar yig‘indisi 77 ga teng. Progressiyaning 7 ga teng bo‘lgan had nomerini toping. A) 11 B) 10 C) 9 D) 8 0% Testni qayta ishga tushiring Author: InfoMaster Foydali bo'lsa mamnunmiz
