2015-yilning variantlari Matematika (Informatika) javoblari bila
Variant № 124 1. bo’lsa, funksiya uchun f(a)=0 bo’lsa a ni toping.
A) -5 B ) 0 C) 0 va 3 D )0 v a -5
2. x - a( x 2 + 1) + x3 +10 = 0 tenglama ildizlaridan biri -1 ga teng. a ni toping.
A) -4 B ) 0 C) 2 D) 4
3. . bo’lsa. P(x) ni topng.
A) B) +1 C ) D )
4. Radiusli r bo'lgan avlananing parallel vatarlari uning radiusining 12 qismiga teng. Vatarlar orasidagi masofani toping.
A) r B ) r C) r D) r
5. To'g'ri chiziq doira aylanasini uzunliklarining nisbati 1:3 kabi bo'lgan 2 yoyga ajratadi. Bu chiziq doiraning yuzini qanday nisbatda bo’ladi?
To’g'ri chiziq doira aylanasini uzunliklarining nisbati 1:3 kabi bo’lgan 2 yoyga ajratadi. Bu chiziq doiraning yuzini qanday nisbatda bo'ladi?
A) B) C) D) 1:9
6. ni hisoblang
A ) 625 B ) 980 C) 1 D)825
7. tenglamaning barcha ildizlari yig’indisini toping.
A) 2√3 B ) O C) √3 D) 1
8. Agar xn ketma-ketlik uchun xn=xn-1-xn-2. n≥3
X2=2, X1=1 bo'lsa x5 ni toping.
A) 5 B) -2 C) -5 D) 2
9. ifodani soddalashtiring.
A) 1 B) 5 C) D) 3
10 Tenglamani yeching. 4sinx-cosx=– 1
A) B ) C) D)
11. 4(n-1) € N son 1,2,3,4,5,6,8,10 va 20 ga qoldiqsiz bo'linsa, n ning eng kichik natural qiymatini toping.
A) 31 B ) 27 C) 28 D )25|
12. vektorning absalyut qiymati 25 ga, vektorning absalyut qiymati esa 13 ga teng. m va n ni toping.
A) m=±12; n=±7 B)m=10; n=7
C) m=12; n=8 D)m=10; n=-7
13. ni hisoblang.
A) B) C) D)
14. sin4 x+cos4x=1 tenglamani yeching.
A) B) C) D)
15. -0,(44) ning teskarisiga qarama qarshi bo'lgan sonning kvadrat ildizini toping.
A) 13) -1,5 С)1,5 D) –
16. Ikkita qo'shni yoqlarning markazlari orasidagi masofa ga teng bo'lgan kubga tashqi chizilgan sirtini yuzini toping.
A) I25 B) 108 C) 144 D) 120
17. Teng Yonli uchburchakning yon tomoniga tushurilgan medianasi 5sm, asosi 4 sm bo'lsa uchburchakning yon tomonini (sm) toping.
A) 7 B) 5 C) 4 D) 6
18. Ordinatasi yn= – 2 bo'lgan nuqtada y=1–4x+x2 egri chiziqqa urinuvchi to'g'ri chiziq tenglamasini ko’rsating.
A) y=-2x va y=2x-8 B) y=2x
C) y=2x va y=8-2x D) y=8-2x
1 9. XOY tekisligida markazi (2:3) nuqtaga bo'lgan aylana rasmdagidek chizilgan. Aylanani OY o'qi A va B nuqtalarga kesib o'tadi. Shulardan A nuqtaning ordinatasi topilsin.
A) B)
C) D)
20. tenglamalar sistemasidan |x-y| ni toping.
A ) 1 B) 0 C) 3 D) 2
21. 9 ga bo'lganda qoldiq 7 ga, 8 ga bo'lganda esa qoldiq 3 ga teng bo'ladigan hamda ikkinehi bo’linma birinchi bo’linmadan 1 ga ortiq bo'ladigan natural sonni toping.
A) 91 B) 43 C) 61 D) 75
22. To'g'ri burchakli uchburchakning katetlari o'zaro 3:4 nisbatda, gipotenuzasi 15 sm ga teng. Shu uchburchakning kichik katetini toping.
A) 10 B ) 15 C )9 D) 20
23. ABC uchburchak O-markazli aylanaga ichki chizilgan. Agar
A) 100° B) 60° C)50° D) 40°
24. Tenglamani yeching:42x-3: 24-2x=
A) 3 B) 1 C) 5 D) 2
25. tengsizlikning ycchimlari sohasini toping.
A)(- ;3) B) (6;8) C) (- ;-1 )va(6; ) D) (-3;3)
26. 5927031, 4587, 3069 sonlaming umumiy bo'luvchilari yigindisini toping.
A) 48 B) 56 C)156 D) 148
27. Piramida asosining yuzi 512 ga, uning balandligi 16 ga teng. Asosiga parallel bo’lgan kesimning yuzi 50 ga teng bo’lsa, u asosdan qanday masofada joylashgan?
A) 10 B) 11 C) 8 D) 9
28 ni hisoblang.
A) B) -1 C) D) 2014
29. bo'lsa, ko’paytmani hisoblang.
A) -2 B) 1 C) 3 D) 2
30. tengsizlikni yeching.
A)(- ;-2] B)[-3;-2] C)(- ;-3] D)[-3;-2)va {11}
31. Qaysi tugma (klavisha) orqali slaydlarni ko'rishni boshlash mumkin?
A) F9 B) FI C) F5 D) F10
32. Quyidagi mantiqiy ifoda qiymatini aniqlang
=rost
A) 2 B) 3 C )4 D) 1
33. Faylga yo'l berilgan: C :\Mypictures\klass\picture.bmp Fayl nomini ko rsating.
A) My pictures B) klass C) picture.bmp D) C:
34. Beysik dasturlash tilida izoh operatori qanday ?
A) GOTO B ) PRINT C) REM D) DIM
35. HTM L tilida tartiblangan ro'yxatlarni berish uchun qanday teglar ishlatiladi?
A)
...
B ) ... C) ... D)
...
36. Paskal tilida haqiqiy va manfiy A, butun va juft B. mantiqiy G va belgili M o’zgaruvchilar tavsifi to’g'ri berilgan javobni aniqlang.
A) Var A: longint; B: boolean; G: word; M: char; B ) Var A: real, B: string; G: boolean: M: byte;
C) Var A: real; B: integer; G: boolean; M: char; D) Var A: shortint: B: integer; G: char; M: real
