12345678910111213141516171819202122232425262728293031323334353637383940 9-sinf matematika fanidan online test 9-sinf o'quvchilari uchun 1-bosqich fan olimpiadasiga tayyorlanish uchun mo'ljallangan online test. Test savollar soni: 40 ta Bajarish uchun ajratilgan vaqt: 90 daqiqa Sizga omad yor bo'lsin! Barcha ma'lumotlarni to'g'ri kiriting. f(x) = \frac{{3{x^2} - 13x + 16}}{2} va \begin{array}{l}{f^1}(x) = f(x)\\{f^2}(x) = f(f(x))\\{f^3}(x) = f(f(f(x)))\end{array} bo’lsa, {f^{100}}(1) ni hisoblang. {3^{99}} {3^{100}} {2^{100}} 3 Hisoblang: \frac{{1\frac{2}{3} \cdot 0,0132 \cdot \frac{3}{5} + 2\frac{1}{2} \cdot 0,0148 \cdot \frac{3}{7}}}{{0,4 \cdot 0,00993 + 0,00007}} 700 7 0,7 70 . Tenglamaning natural sonlardagi yechimida z ni toping: x + \frac{1}{{y + \frac{1}{z}}} = \frac{{68}}{{21}} 5 3 2 4 ax = benglamaning cheksiz ko’p ildizi mavjud. bx=a tenglamaning nechta ildizi bor? bitta cheksiz ko’p ildizi yo’q ikkita . Ifodaning eng kichik qiymatini toping: {p^2} - 16pq + 64{q^2} - 4 -12 -4 12 4 f(x) funksiya aniqlanish sohasiga tegishli ixtiyoriy x uchun \frac{{f( - x) \cdot f(x)}}{{{f^2}(x)}} = - 1 bo’ladi. f(5) = 13 ekani ma’lum. i hisoblang. 65 13 5 - 13 Funksiyaning eng kichik qiymatini toping: f(x) = 2{x^6} - 7{x^3} + 9 2\frac{7}{8} 4\frac{1}{2} - 3\frac{1}{4} 3\frac{1}{4} Natural sonlar to’plamini shunday guruxlarga ajratildiki, bunda har bir guruh natural sonning kvadrati bilan tugaydi {1}, {2,3,4}, {5,6,7,8,9}, .... 17- guruhga kiruvchi sonlar yig’indisini toping. 8008 9009 289 9800 . Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping. 50 34 44 48 Hovuzga uchta quvur o‘tkazilgan. Birinchisi hovuzni 12 soatda, ikkinchisi 8 soatda to‘ldiradi. Uchinchisi hovuzni 1 sutkada bo‘shatadi. Agar uchala quvur birgalikda ochib qo‘yilsa, bo‘sh hovuzning yarmi qancha vaqt(soat)da to‘ladi? 1,5 2,5 3 2 Tenglamaning ildizlar yig’indisini toping: (x - 1) \cdot (x - 2) \cdot (x - 3) \cdot ... \cdot (x - 99) \cdot (x - 100) = 0 5050 2500 5000 3880 2010\frac{{2009}}{{2010}} \cdot 2011\frac{{2009}}{{2010}} - 2009\frac{{2009}}{{2010}} \cdot 2012\frac{{2009}}{{2010}} ni hisoblang. - 2\frac{{2009}}{{2010}} 2 2\frac{{2009}}{{2010}} 3 . Tenglamani yeching: \left| {x + 6} \right| = \left| {x + 10} \right| 6 -6 4 -8 x sonining necha foizini x ning 30% ining 30% i tashkil qiladi ? 60 90 9 30 Funksiyaning aniqlanish sohasiga nechta butun son tegishli bo’ladi? f(x) = \frac{{\sqrt {x - 4} \cdot \sqrt[3]{{x + 5}} \cdot \sqrt[4]{{36 - {x^2}}}}}{{\sqrt[5]{{{x^2} - 11x + 30}}}} butun sonlar yo’q 2 3 1 . Rombning diagonallari 6 va 8 ga teng bo‘lsa, uning tomonini toping. 5 6 7\sqrt 2 3\sqrt 2 Ikki natural sonning eng kichik umumiy karralisi 240 ga teng, shu sonlarning eng katta umumiy bo'livchisi esa 16 ga teng. Bu sonlarning ko’paytmasini toping. 15 224 3840 256 Agar \left( {3 - a} \right)\left( {3 - b} \right)\left( {3 - c} \right) = \left( {3 + a} \right)\left( {3 + b} \right)\left( {3 + c} \right) bo‘lsa, {\left( {ab} \right)^{ - 1}} + {\left( {bc} \right)^{ - 1}} + {\left( {ac} \right)^{ - 1}} ni hisoblang. (Bunda abc \ne 0). \frac{1}{9} - \frac{1}{9} \frac{1}{{27}} - \frac{1}{3} Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping. 1350, 450 820, 980 720, 1080 1000, 800 . Tarkibida 85% suv bo‘lgan 0,5 t sellyuloza qorishmasida 75% suv bo‘lgan qorishma olish uchun necha kg suvni bug‘lantirish kerak? 400 200 300 100 Hisoblang: \frac{{{2^7} \cdot {4^{10}} \cdot {8^8} \cdot {{16}^8}}}{{{{32}^{16}}}} 2 8 4 1 Kirish imtixonlari topshirilayotgan auditoriyadagi abituriyentlarning 40% i qizlar, qolganlari esa o’g’il bolalar. Auditoriyada eng kami bilan qancha abituriyent bo’lishi mumkin? 5 20 50 10 Ikki to’g’ri chiziq kesishganda 4 ta burchak hosil bo’ldi. Bir burchakning kattaligi ikkinchisidan 100^\circ ga katta. Ikkita eng katta burchakning yig’indisini toping. 80 140 300 280 Motorli qayiq bir to’xtash joyidan ikkinchisigacha 3 soatda suzib boradi, sol esa shu masofani 12 soatda suzib o’tadi. Shu masofani motorli qayiq oqimga qarshi necha soatda suzib o’tadi ? 15 6 8 9 P\left( x \right) ko‘phadni x - a ga bo‘lgandagi qoldiqni toping. 0 P\left( x \right) P\left( a \right) P\left( {x - a} \right) \frac{x}{2} = \frac{y}{3} = \frac{z}{5} bo‘lsa, \frac{{xyz}}{{{x^3} + {y^3} + {z^3}}} ifodaning qiymatini toping. \frac{2}{3} \frac{3}{{16}} 1\frac{1}{8} 1\frac{{13}}{{16}} Agar k > 0 va b = 0 bo‘lsa, u holda y = kx + b to‘g‘ri chiziq grafigi qaysi choraklardan o‘tadi? I, II I, III I, II, III II, IV Ifodaning oxirgi raqamini aniqlang: {3^{279}} \cdot {7^{298}} - {3^{178}} \cdot {7^{197}} 1 3 6 0 Agar ikki xonali sonning o’ng tomoniga 6 raqami yozib qo’yilsa, berilgan sonning yarmi bilan 500 ning yig’indisiga teng son hosil bo’ladi. Bu qanday ikki xonali son? 46 48 44 52 Tarkibida 30% tuz bo’lgan 16 kg eritmani tarkibida 50% tuz bo’lgan eritma bilan aralashtirildi. Hosil bo’lgan eritmaning tarkibida 42% tuz bo’lsa, ikkinchi eritmadan necha kg olingan? 24 22 30 50 Abituriyentga 36 ta masala berildi. To‘g‘ri yechilgan har biriga 3 ball beriladi. Noto‘g‘risiga 2 ball chegiriladi. 88 ball to‘plashi uchun o‘quvchi nechta masalani to‘g‘ri yechishi kerak? 30 34 32 38 . Yuzi 96 sm2, balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping. 20 sm 40 sm 50 sm 56 sm Agar \left\{ {\begin{array}{*{20}{c}}{4x + 6y = 98}\\{6x + 4y = 92}\end{array}} \right.bo’lsa, x+y ni toping. 19 18\frac{3}{4} 21 20 \begin{array}{l}f(x) = ax + b\\g(x) = cx + d\end{array} Agar \frac{b}{d} = 5va f\left( {g\left( x \right)} \right) = g\left( {f\left( x \right)} \right)yniyat bo’lsa, \frac{{c - 1}}{{a - 1}}i toping. 0 \frac{1}{5} 5 aniqlan-magan . Asoslari 18 va 12 ga teng bo‘lgan teng yonli trapetsiyaning diagonallari o‘zaro perpendikulyar. Trapetsiyaning yuzini toping. 225 400 150 125 To‘g‘ri burchakli uchburchakka ichki chizilgan aylana urinish nuqtasida gipotenuzani 5 va 12 ga teng kesmalarga ajratadi. Uchburchak yuzini toping. 65 48 60 35 {({x^7} \cdot {x^6} \cdot {x^6} \cdot {x^8})^9} ifodani {({x^2})^7} \cdot {({x^2} \cdot {x^{10}})^6} ifodaga bo’lganda bo’linma {x^A} chiqdi. A ni toping. 213 12 231 157 Ifodaning eng kichik qiymatini toping: f(x,y) = {x^2} - 6x + {y^2} - 8y + 36 11 24 -10 \left\{ \begin{array}{l}\frac{{2x + y + \frac{z}{2}}}{z} = 3\\\frac{{x + \frac{{3y}}{4} + \frac{z}{2}}}{y} = 3\end{array} \right. sistemadan \frac{z}{y} ni toping. \frac{7}{{11}} \frac{7}{3} \frac{{11}}{7} \frac{3}{7} 1 dan 732 gacha bo’lgan natural sonlar ko’paytmasi nechta no’l bilan tugaydi? 146 179 124 181 Facebook Twitter VKontakte 0% Перезапустить тест