9-sinf Matematika olimpiada №2 May 23, 2022Avgust 19, 2024 da chop etilgan InfoMaster tomonidan 9-sinf Matematika olimpiada №2 ga 1 fikr bildirilgan 0 12345678910111213141516171819202122232425 Vaqtingiz tugadi! Tomonidan yaratilgan InfoMaster 9-sinf Matematika olimpiada №2 2019-yil tuman bosqichida tushgan savollar 1 / 25 1. ifodani a=4, b=5 bo‘lgandagi qiymatini toping. A) -1 B) 2 C) 0 D) 1 2 / 25 2. P(x) ko‘phadni x-a ga bo‘lgandagi qoldiqni toping. A) 0 B) P(a) C) P(x-a) D) P(x) 3 / 25 3. Agar bo‘lsa, ko‘paytmani hisoblang. A) 1/33 B) -1 C) 31/35 D) 1/35 4 / 25 4. Muntazam uchburchakning ichidagi nuqtadan tomonlarigacha bo`lgan masofalar yig`indisi 6 ga teng bo`lsa, uchburchak yuzini toping. A) 12√3 B) 84 C) 99 D) 55 5 / 25 5. Bahodir o`zidagi 411 dona yong`oqni 4 ta bolaga bo`lib berdi. Agar Sanjar va O`ktamning olgan yong`oqlari soni 2 va 3 sonlariga to`g`ri proporsional ,O`ktam va Sohibning yong`oqlari 7 va 5 sonlariga teskari proporsional , Sanjar va G`anisherning yong`oqlari esa 9 va 4 sonlariga teskari proporsional ekanligi ma`lum bo`lsa, G`anisher nechta yong`oq olgan? A) 135 B) 126 C) 145 D) 180 6 / 25 6. Agar sin x + cos x = 1,04 tenglik o’rinli bo’lsa, x qaysi chorakda joylashgan? A) III B) I C) II D) IV 7 / 25 7. Agar x2−8x+20z+4z2+41=0 tenglik o`rinli bo`lsa, xz ni toping. A) -40 B) -20 C) -10 D) -5 8 / 25 8. Agar f(x) = (a + b − 4)x3+ 2x2+ (b − 3)x +6 juftfunksiyaberilganbo’lsa, f(b) ningqiymatini toping. A) 27 B) 24 C) 7 D) 20 9 / 25 9. Birinchi quvurdan ikkinchi quvurga qaraganda ikki barobar ko’p suv oqadi.Ikkalasi birgalikda bo’sh hovuzni 12 soatda to’ldiradi.Birinchi quvur hovuzning uchdan bir qismini necha soatda to’ldiradi? A) 12 B) 6 C) 4 D) 9 10 / 25 10. f(x) funksiyani toping. A) (1+x)/(1-x) B) 1/x C) (1-x)/(1+x) D) 1/(1-x) 11 / 25 11. tengsizlikni yeching. A) (-∞;3)∪(3;∞) B) xℇR C) (-∞;-1/2)∪(-1/2;3)∪(3;∞) D) (-∞;-1/2)∪(-1/2;∞) 12 / 25 12. (a2- 9)x = a2+ 2a - 3 tenglama a ningqandayqiymatidacheksizko’pyechimgaega? A) a = 1 B) a=−3 C) a=2 ; a = -3 D) a ≠1 13 / 25 13. Sonlarni o`sish tartibida yozing. A) c B) a C) b D) c 14 / 25 14. ABC uchburchakda O nuqta AD medianava BE bissektrisalar kesishishnuqtasi. AOEva BOD uchburchaklar yuzlari mos ravishda 1 va 3 ga teng bo`lsa, EOC uchburchakning yuzini toping. A) 5 B) 3 C) 2 D) 4 15 / 25 15. Agar arifmetik progressiyada bo`lsa, ayirmani toping. A) 3 B) 2 C) 4 D) 1 16 / 25 16. ax²+bc+c=0 kvadrat tenglama bitta manfiy, bitta musbat ildizga ega bo`lsa, quyidagilardan qaysibiri to`g`ri?(D=b2−4ac) A) 1 B) 3 C) 4 D) 2 17 / 25 17. Agar bo’lsa , x va y sonlarning ko’paytmasini toping. A) 8 B) 6 C) -4 D) -2 18 / 25 18. Agar a-b =|x| + 3 bo’lsa a va b lar uchun to’g’ri munosabatni aniqlang. A) a ≤ b B) a C) a=b+1 D) a>b 19 / 25 19. Hisoblang: cos 10o − 2 cos 50o − cos 70o A) –cos40° B) cos40° C) sin40° D) –sin40° 20 / 25 20. Agar cheksiz kamayuvchi geometrik progressiyaning hadlari yig`indisi ga teng bo`lsa, uning hadlari kublari yig`indisining hadlari kvadratlari yig`indisiga nisbatini toping. A) 1 B) 2 C) 3 D) 4 21 / 25 21. Funksiya berilgan. f(f(−1)) ni toping. A) 5 B) 29 C) 18 D) 15 22 / 25 22. x0 soni tenglamani ildizi bo`lsa, x²0 -64 ni toping. A) 20/69 B) 8 C) -48 D) 0 23 / 25 23. ABCD trapetsiyaning yuzi 36 gateng, asoslari DC=6, AB=2. BC tomonidan E nuqta olingan bo’lib, BE=2EC bo’lsa, ADE uchbutchakning yuzini toping. A) 14 B) 16 C) 12 D) 21 24 / 25 24. Agar biror oyda 5 ta payshanba bo’lsa, shu oyda … bo’la olmaydi. A) 5 ta shanba B) 5 ta juma C) 5 ta yakshanba D) 5 ta seshanba 25 / 25 25. bo‘lsa, 3? + ? ni toping. A) 7,5 B) 2,5 C) 10 D) 5 0% Testni qayta ishga tushiring tomonidan Wordpress Quiz plugin Matematika olimpiada, Tuman 2019-2020 o'quv yili
