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. . Tenglamani yeching: \[\left| {x + 6} \right| = \left| {x + 10} \right|\] -6 6 -8 4 Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping. 1350, 450 820, 980 1000, 800 720, 1080 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? 2,5 2 3 1,5 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? 44 48 52 46 \[\left\{ \begin{array}{l}\frac{{2x + y + \frac{z}{2}}}{z} = 3\\\frac{{x + \frac{{3y}}{4} + \frac{z}{2}}}{y} = 3\end{array} \right.\] sistemadan \[\frac{z}{y}\] ni toping. \[\frac{7}{3}\] \[\frac{7}{{11}}\] \[\frac{3}{7}\] \[\frac{{11}}{7}\] \[\frac{x}{2} = \frac{y}{3} = \frac{z}{5}\] bo‘lsa, \[\frac{{xyz}}{{{x^3} + {y^3} + {z^3}}}\] ifodaning qiymatini toping. \[1\frac{{13}}{{16}}\] \[\frac{3}{{16}}\] \[\frac{2}{3}\] \[1\frac{1}{8}\] . Tarkibida 85% suv bo‘lgan 0,5 t sellyuloza qorishmasida 75% suv bo‘lgan qorishma olish uchun necha kg suvni bug‘lantirish kerak? 100 400 300 200 x sonining necha foizini x ning 30% ining 30% i tashkil qiladi ? 30 60 90 9 \(f(x) = \frac{{3{x^2} - 13x + 16}}{2}\) 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. \({2^{100}}\) \({3^{99}}\) 3 \({3^{100}}\) 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 9 6 8 To‘g‘ri burchakli uchburchakka ichki chizilgan aylana urinish nuqtasida gipotenuzani 5 va 12 ga teng kesmalarga ajratadi. Uchburchak yuzini toping. 65 60 35 48 Agar \[k > 0\] va \[b = 0\] bo‘lsa, u holda \[y = kx + b\] to‘g‘ri chiziq grafigi qaysi choraklardan o‘tadi? I, II, III II, IV I, II I, III 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 \[abc \ne 0\]). \[ - \frac{1}{9}\] \[\frac{1}{{27}}\] \[\frac{1}{9}\] \[ - \frac{1}{3}\] . Asoslari 18 va 12 ga teng bo‘lgan teng yonli trapetsiyaning diagonallari o‘zaro perpendikulyar. Trapetsiyaning yuzini toping. 225 150 400 125 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. 9009 289 8008 9800 . Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping. 50 48 34 44 Hisoblang: \(\frac{{{2^7} \cdot {4^{10}} \cdot {8^8} \cdot {{16}^8}}}{{{{32}^{16}}}}\) 8 2 1 4 . Yuzi 96 sm2, balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping. 50 sm 56 sm 40 sm 20 sm . Rombning diagonallari 6 va 8 ga teng bo‘lsa, uning tomonini toping. 6 5 \[3\sqrt 2 \] \[7\sqrt 2 \] \({({x^7} \cdot {x^6} \cdot {x^6} \cdot {x^8})^9}\) ifodani \({({x^2})^7} \cdot {({x^2} \cdot {x^{10}})^6}\) ifodaga bo’lganda bo’linma \({x^A}\) chiqdi. A ni toping. 12 213 157 231 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? 30 24 22 50 Kirish imtixonlari topshirilayotgan auditoriyadagi abituriyentlarning 40% i qizlar, qolganlari esa o’g’il bolalar. Auditoriyada eng kami bilan qancha abituriyent bo’lishi mumkin? 10 20 50 5 Tenglamaning ildizlar yig’indisini toping: \((x - 1) \cdot (x - 2) \cdot (x - 3) \cdot ... \cdot (x - 99) \cdot (x - 100) = 0\) 5050 3880 2500 5000 Ifodaning eng kichik qiymatini toping: \(f(x,y) = {x^2} - 6x + {y^2} - 8y + 36\) 24 -10 11 . Tenglamaning natural sonlardagi yechimida \[z\] ni toping: \[x + \frac{1}{{y + \frac{1}{z}}} = \frac{{68}}{{21}}\] 5 2 4 3 . Ifodaning eng kichik qiymatini toping: \[{p^2} - 16pq + 64{q^2} - 4\] -12 12 -4 4 Agar \(\left\{ {\begin{array}{*{20}{c}}{4x + 6y = 98}\\{6x + 4y = 92}\end{array}} \right.\)bo’lsa, x+y ni toping. 21 19 \(18\frac{3}{4}\) 20 Hisoblang: \(\frac{{1\frac{2}{3} \cdot 0,0132 \cdot \frac{3}{5} + 2\frac{1}{2} \cdot 0,0148 \cdot \frac{3}{7}}}{{0,4 \cdot 0,00993 + 0,00007}}\) 70 700 0,7 7 Funksiyaning eng kichik qiymatini toping: \(f(x) = 2{x^6} - 7{x^3} + 9\) \( - 3\frac{1}{4}\) \(4\frac{1}{2}\) \(2\frac{7}{8}\) \(3\frac{1}{4}\) \[2010\frac{{2009}}{{2010}} \cdot 2011\frac{{2009}}{{2010}} - 2009\frac{{2009}}{{2010}} \cdot 2012\frac{{2009}}{{2010}}\] ni hisoblang. 3 \[2\frac{{2009}}{{2010}}\] \[ - 2\frac{{2009}}{{2010}}\] 2 \(\begin{array}{l}f(x) = ax + b\\g(x) = cx + d\end{array}\) Agar \(\frac{b}{d} = 5\)va \(f\left( {g\left( x \right)} \right) = g\left( {f\left( x \right)} \right)\)yniyat bo’lsa, \(\frac{{c - 1}}{{a - 1}}\)i toping. aniqlan-magan 5 \(\frac{1}{5}\) 0 Ifodaning oxirgi raqamini aniqlang: \({3^{279}} \cdot {7^{298}} - {3^{178}} \cdot {7^{197}}\) 6 0 1 3 1 dan 732 gacha bo’lgan natural sonlar ko’paytmasi nechta no’l bilan tugaydi? 179 181 124 146 \(ax = b\)englamaning cheksiz ko’p ildizi mavjud. bx=a tenglamaning nechta ildizi bor? ikkita bitta ildizi yo’q cheksiz ko’p 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. 15 256 3840 224 Funksiyaning aniqlanish sohasiga nechta butun son tegishli bo’ladi? \(f(x) = \frac{{\sqrt {x - 4} \cdot \sqrt[3]{{x + 5}} \cdot \sqrt[4]{{36 - {x^2}}}}}{{\sqrt[5]{{{x^2} - 11x + 30}}}}\) 2 1 butun sonlar yo’q 3 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. 140 300 80 280 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 32 34 38 \[P\left( x \right)\] ko‘phadni \[x - a\] ga bo‘lgandagi qoldiqni toping. \[P\left( {x - a} \right)\] \[P\left( x \right)\] \[P\left( a \right)\] 0 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. \(5\) \(13\) \( - 13\) \(65\) Facebook Twitter VKontakte 0% Restart quiz