9-sinf 1-variant

4x2+2 −9⋅2x2+2 +8 = 0

A) 1 B) –1 C) 2 D) –2 E) 4

39. 
    Muntazam to'rtburchakli piramidaning balandligi 7 ga, asos tomoni 8 ga teng. Piramida yon qirrasini toping.
    
    1. 
       –65 B) 9 C) 12 D) 13 E) 15
       
40. 
    Aylananing markazi 6 ga teng. Aylana nuqtasidan diametrga tushirilgan perpendikulyar diametrni 1:3 nisbatda bo'ladi. Perpendikulyar uzunligini toping.
    
    1. 
       3-3 B) 3-2 C) 4 D) 3,6 E) 4,2
       

10-sinf

2-variant

1. 
   Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka bo'ladi. Trapetsiya burchaklarini toping.
   

A) 72°, 108° B) 45°, 135° C) 80°, 100° D) 82°, 98° E) 60°, 120° sin x +tgx

2. 
   x ning qanday qiymatlarida ifodaning ishorasi musbat cosx + ctgx
   

bo'ladi?

A) π/2+πk, πk, k ∈ Z B) (-∞;∞) C) (0;∞) D) (-∞;0) E) πk, k ∈ Z 3. ABC muntazam uchburchakning ichidan ixtiyoriy D nuqta olinib, undan BC, CA va AB tomonlarga mos ravishda PD, PE va PF

PD+PE+DF perpendikulyar tushurilgan. ni hisoblang. BD+CE+AF

A) 1: 3 B) 1:1 C) 1:2 D) 2:1 E) 3 : 1

x² +ax− 2

4. 
   a ning qanday qiymatlarida −3 < ₂ < 2 tengsizlik x ning
   

x −x+ 2

barcha qiymatlarida o'rinli bo'ladi?

A) -1 < a < 2 B) -3 < a < 2 C) -2 < a < 1 D) a > 0 E) a < 0

4. 
   ABCD to'g'ri to'rtburchakda AD = 12, CD =9. D-diagonallar kesishish
   

→ → → → nuqtasi. CD−AD−OA+OB ni toping.

A) 9 B) 4,5 C) 6 D) 15 E) 12

4. 
   Hisoblang: 5,468² + 10,64 - 4,532²
   

A) 15 B) 18 C) 20 D) 25 E) 16

4. 
   Tengsizlikni yeching: (x - 1)-14 + 5x - x² = 0
   

A) [1: 7] U –2 B) [-2: 7] C) [-2: 1) U (1: 7] D) [1: +oo) E) (-oo: 1]

⎧y = −11− x²

8. 
   ⎨ tenglamalar sistemasi nechta yechimga ega?
   

⎩y = x − 4

A) ∅ B) 1 C) 2 D) 3 E) 4

n² −3n+4

8. 
   n ning nechta natural qiymatlarida ifodaning qiymati n−1
   

butun son bo'ladi?

A) 4 B) 1 C) 2 D) 3 E) 5

8. 
   tgα = -3 - 2 shartni qanoatlantiruvchi o'tmas burchakni toping. A) 165^o B) 150^o C) 135^o D) 120^o E) 157,5^o
   
9. 
   Agar y₁ va y₂ sonlari y² - by - b - 1 = 0 tenglamaning ildizlari bo'lsa, b ning qanday qiymatida y₁² + y₂² ning qiymati eng kichik bo'ladi?
   

A) 1,2 B) 0,85 C) 1 D) 1,5 E) 2

(x−2)(4−x)

8. 
   y= funksiyaning aniqlanish sohasini toping. x(x+1)
   

A) (-1; 0) U [2; 4] B) [-1; 0] U (2; 4) C) (-1; 4] U [2; 4) D) (-∞, -1) U [0; 2] U [4; ∞) E) (-∞, -1] U [0; 2) U (4; ∞)

a + 2a + 3a +...+ na 3a

8. 
   Soddalashtiring: ₂ +
   

n − 2a −3 2(n −3)

A) n/a B) a/n C) a/2 D) na/2 E) 2/na 14. Cheksiz kamayuvchi geometrik progressiyaning yig'indisini toping: 1/2 - 1/3 + 1/4 - 1/9 + 1/8 - 1/27 + ...

A) 0,2 B) 1/2 C) 3/4 D) 1,2 E) 2,5

15. 
    Hisoblang: tg22,5° + tg^-122,5°
    

A) –2 B) -2^-1 C) 4-2 D) 4^-1-2 E) 2-2

15. 
    Hisoblang: 1 - sin⁶22,5° + cos⁶22,5°
    
    1. 
       (-3 - 1)/2 B) (-6 + 5)/4 C) (10 + 3-2)/8 D) (16 + 7-2)/16
       

E) (10 + 2-3)/5

15. 
    Agar sinα - (1 - 2sin²(α/2)) = 1/3 bo'lsa, cos(π/4 - α) - sin(3π /4 - α) ni hisoblang.
    

A) 5/6 B) 3/4 C) 4/5 D) -3/4 E) -3/2

15. 
    Uchburchakning balandligi 12 ga teng bo'lib, 21 ga teng tomonini 5:16 kabi nisbatda bo'ladi. Uchburchakning perimetrini toping.
    

A) 54 B) 62 C) 56 D) 108 E) 48

15. 
    Uchburchakning asosiga parallel to'g'ri chiziq uning yuzini teng ikkiga bo'ladi. Asosidan hisoblanganda yon tomonlari qanday nisbatda bo'linadi?
    
    1. 
       ( 2 - 1):1 B) 1:1 C) 1/2 :1 D) ( 3 - 1):1 E) (2 2 -1):1
       
16. 
    Parallelogramning o'tkir burchagi 30° dan kichik emas, 45° dan katta emas. Tomonlariga o'tkazilgan balandliklarining ko'paytmasi 10 ga teng. Parallelogram yuzining eng katta qiymatini toping.
    

A) 20 B) 10 3 C) 10 2 D) 5 3 E) 20 2

15. 
    Tenglamani yeching: (x+ 3 ): 4 = 6
    

A) 22 B) 21 C) 22 D) 23 E) 21

15. 
    2x² - 5x + 12 tengsizlikning butun yechimlari yig'indisini toping.
    

A) 4 B) 9 C) 7 D) 5 E) 6

15. 
    Agar sin (x + π/6) + sin (x - π/6) = 2 3 cosx bo'lsa, tgx ni toping.
    

A) –1 B) 1 C) 0 D) 2 E) 1/2

15. 
    n ning qanday qiymatlarida nx - x² = 0 tenglama yechimga ega?
    

A) n > 0 B) n < 0 C) n = 1 D) n = 0 E) barcha n larda 25. Son oxirida nechta nol qatnashsadi: p = 30! + 70! ?

A) 5 B) 7 C) 14 D) 16 E) 24

26. Barcha ikki honali musbat sonlarning yig'indisini toping.

A) 4900 B) 4905 C) 4950 D) 4500 E) 5005 27. Agar 8^x = 16^y+1 va 2x = 5y -2 bo'lsa, x+y ni toping.

A) –1 B) 2 C) 3 D) 1 E) 6

28. Rombning perimetri 16 ga, ichki chizilgan aylananing radiusi 1 ga teng. Rombning o'tmas burchagini toping.

A) 110^о B) 120^о C) 135^о D) 145^о E) 150^о

29. 
    Qo'shma burchaklarning biri ikkinchisidan 3 marta katta. Shu burchaklardan kichigini toping.
    
    1. 
       75^о B) 60^о C) 45^о D) 40^о E) 30^о
       
30. 
    Silindr yon sirtining yuzi 24π, hajmi esa 48π. Silindr balandligini toping.
    

A) 8 B) 6 C) 4 D) 3 E) 2 31. Ifodaning qiymatini toping:

24 - 27 - 25 - 24 + 18 - 36 - 16 - 36 - 21 - 5

1. 
   0 B) 15 C) 115 D) 1 E) 45
   

32. Quyidagi sonlarni kamayish tartibida yozing:

a = log₃10, b = log₅18, c = log₆5.

A) b > c > a B) c > b > a C) a > b > c D) a > c > b E) b > a > c

33. Quyidagi tenglamalar sistemasidan x² + y² ni toping:

⎧5x + 2y = 23

⎨

⎩y −3x = −5

A) 16 B) 9 C) 25 D) 10 E) 36 34. e^-x = x - 5 tenglamanig nechta ildizi bor?

A) 1 B) 2 C) 3 D) - E) aniqlab bo'lmaydi

35. 
    Agar a²+b²=8, ab=5 bo'lsa, a⁴ + a²b² + b⁴ ni qiymatini toping.
    

A) 49 B) 39 C) 36 D) 89 E) 69

35. 
    Hisoblang: 17+12 2 − 3−2 2
    

A) 1 B) 2 C) 2 2 D) 3 E) 2 - 1 37. k ning nechta butun qiymatida y = 2 -kx va y = kx² - 2kx + 3 funksiyalar grafiklari kesishmaydi?

A) 2 B) 3 C) 4 D) 5 E) to'g'ri javob yo'q

38. 
    y = -x² + 2x + 3 parabola uchi koordinatalini toping.
    

A) (-1; 3) B) (-1; 2) C) (1; 3) D) (1; 4) E) (1; -2)

38. 
    Bir nuqtadan tekislikka uzunliklari 23 va 33 og'ma tushirilgan. Agar o'g'malarning tekislikka proyeksiyalari -2:2-3 nisbatda bo'lsa, nuqtadan tekislikkacha bo'lgan masofani toping.
    

A) 9 B) 11 C) 6 5 D) 12 E) 417

38. 
    Doiraga tashqi chizilgan teng yonli trapetsiyaning asoslari 18 va 8.
    

Doira diametrini toping.

A) 10 B) 11 C) 12 D) 12,4 E) 14