2015-yilning variantlari Matematika (Informatika) javoblari bila
Variant №128 1.Bir to'g ri chiziqda ketma-ket yotuvchi A, B, C va D nuqtalar uchun AB = CD va BC = 12 ekanligi ma’lum. Bu to’g’ri chiziqda Yotmaydigan E nuqtadan, B va P nuqtalargacha bo’Igan masofa 10 ga teng Agar AED Uchburchakning perimetri BEC uchburchakning Perimetridan ikki marta katta bo'Isa, AB ni toping.
A) 8 B) 7,5 C) 8,5 D) 9
2. ABC uchburchak O-markazli aylanaga ichki chizilgan. Agar A ) 100° B) 40° C)60° D) 50°
5. Agar bo’lsa, S qaysi oraliqqa tegishli?
A) B)(6;7) C) D)
6. tenglamani yeching.
A) 3 B ) 8 C) 40 D) 4
7. ifodani soddalashtiring.
A)5 B) 1 C) D) 3
8. Radiusi r bo'lgan aylananing parallel vatarlari uning radiusining 1,2 qismiga teng. Vatarlar orasidagi masofani toping.
A) r B) r C ) r D) r
9. tenglamaning haqiqiy ildizlarini toping
A) 4 B) 5 C) 1 D ) 2
10. Agar bo ‘lsa. ni toping
A) B) C) D)
11. y=3sin5x+sin15x funksiyaning hosilasini toping
A) 30cos5xcos10x B) 30sin5x-cos10x C) -30cos5x- sin10x D) 30sin5x-sin10x
12. Uchlari A(7;7) va B (-2;-2) nuqtalarda bo’lgan kesmani 1:2 nisbatda bo’luvchi C nuqtaning kordinatalarini toping.
A) (2,5; 2,5) B)(4;4) C) (-4;-4) D)(4;-4)
13. bo'lsa, ko’paytmani hisoblang.
A) 2 B) 1 C) -2 D) 3
14. m ning nechta qiymatida tenglama bitta ildizga ega?
A) 2 B ) 4 C)1 D) 3
15. Kvadratning diognali 2√8 ga teng bo'lsa, uning yuzini toping.
A) 8 B) 16 C) 64 D) 32
16. 3,1,1/3, … geometrik progressiyaning oltinchi va ettinchi hadlarini toping.
A) B)1,3 C) D)
A ) - , — B) 1,3 O — D) ,
9 27 81243 27 81
17. ifodani soddalashtiring (a>0, b> 0).
A) 0 B ) a-b C) √a - √b D) 1
18. Agar 2 ≤ x ≤y≤ z≤t≤ 128 bo’lsa ifodaning eng kichik qiymatini toping.
A) 0,75 B ) 0,25 O 1,6 D) 0,5
19. Rasmda berilgan ma'lumotlarga ko’ra x° =A) 25° B) 30° C) 20° D) 15°
20. Diognallarining soni tomonlarining sonida 2 marta kam bo’lgan qavariq muntazam ko’pburchakning har bir uchidan bittada olingan tashqi burchaklari va bitta ichki burchagi yig'indisini toping.
A) 540° B ) 360° C)900° D)450°
21. Toq funksiyani ko’rsating.
A) B)y=xcosx C) D)
2 2. Rasmda y=x2-5x-2m+2 funksiyning grafigi parabola berilgan bo’lib, uning uchun OB-OA=3 bo'lsa, m ning qiymati qanday?
A)1 B ) -1 C)-1,5 D) -2
23. AB kesmaning uchlaridan va uning o’rtasidagi M nuqtadan chiqarilgan parallel to’g’ ri chiziqlar biror tekislikni A1, B1, M1 nuqtalarda kesib o’tadi. Agar BB1=7 m, AA1=5 m va AB kesma tekislikni kesib o’tmagan bo’lsa. MM1 kesma uzunligini (m) toping.
A) 6,2 B ) 5 C )6 D) 6,4
24. vektorning absalyut qiymati 25 ga, vektorning absalyut qiymati esa 13ga teng. m va n ni toping.
A)m=12;n=8 B)m=10;n=7 C) m=10; n=-7 D) m=±12; n=±7
25.Nechta uch xonali son 35 ga qoldiqsiz bo’linadi?
A) 28 B ) 27 C)26 D) 25
26. ctg55° •ctg45° • tg35° ni hisoblang.
A) 2 B ) 0 C)1 D) 0,5
27. ni hisoblang
A ) 12 B ) 4 C)6 D) 8
28 Bo'luvchi 4/3 marta orttirilsa, bo'linuvchining esa 1/3 qismi yo'qotilsa, bo'linma qanday o'zgaradi?
A ) 0.(8) marta oshadi B) 2 marta kamayadi C) 25 % ga oshadi D) o’zgarmaydi
29. Ordinatasi y0=-2 bo'lgan nuqtada y=1-4x+x2 egri chiziqda urinuvchi to’g'ri chiziq tenglamasini ko’rsating.
A ) y = -2x va y =2x - 8 B) y = 8 - 2x C) y = 2x D) y = 2x v a y = 8 - 2x
30.Yig'indisi 6 ga teng, birinchi 5 ta hadining 13 yig'indisi esa 5— ga teng bo lgan cheksiz 16 kamayuvchi geometrik progressiyaning uchinchi hadini toping.
A) 0,5 B ) 0,75 C)1,5 D) 3
31. ASCII yoyilmasi to'g'ri ko'rsatilgan qatorni ko'rsating:
A) American Standart Computer for Information Interchange
B) American Special Code for Information Interchange
C) American Standart Code for Information Integer
D) AmericanStandart Code for information
Interchange
32. 2 ta mushuk 2 soatda 2 ta sichqonni yeydi. 4 ta mushuk 4 soatda nechta sichqonni yeydi?
A) 2 B ) 8 C) 4 D) 6
33. Dinamik kutubxona fayllarining kengaytmasini toping.
A).bak B) .bat C) .xls D) :dll
34 MS Excel 2003 dasturida yozilgan quyidagi funksiyaning qiymatini toping. =CP3HAЧ (31; 10; 12;7)
A ) 15 B) 12 C)16 D) 14
35. HTML tilida tartiblangan ro'yxatlarni berish uchun qanday teglar ishlatiladi?
A)
...
B) ... C) ... D)
...
36. Paskal tilidagi quyidagi dastur ishga tushirilganda xatolik xabarini chiqarmasligi uchun “ ?". va ” ??” belgilari
o’rniga qo'yish mumkin bo’lgan (mos ravishda) standart funksiyalar juftligini aniqlang:
Var a:shortint; b:word;
Begin a:=?(5/5); b:=??(90-sqr(10)); write(a.b); End.
A) trunc, abs B) int, abs C) abs. round D) round, trunk
