2015-yilning variantlari Matematika (Informatika) javoblari bilan

Variant №129
1. ni hisoblang.
A)1/2 B) 2 C)1/4 D) 1
2. |x -5ax|=15a tenglama uchta haqiqiy yechimga ega bo’ladigan a ning qiymati necha?
A) 1 B) 2 C)3 D) 0
3. (x;y) sonlar jufti tenglamalar sistemasining yehimi bo'lsa, 6x+y ning qiymatini toping.
A) 1 B ) 0 C)-2 D) -1
4. 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) D) 1:9 C)
5. ctg2α-ctgα ni hisoblang.
A) - B) C) D)
6. 7¹⁶ +7¹⁴ yigindi qiymatining natural bo'luvchilari sonini toping.
A) 100 B ) 255 C)90 D)30
7. To'g'ri burchakli uchburchakda bir burchagi 60° ga teng,kichik tomoni esa 3√3 bo'lsa,uchburchakning perimetrini toping
A)3√3+5 B) 11√3 C) 2√3+3√3 D)9(√3+1)
8. tengsizlikning eng katta manfiy butun yechimining eng kichik musbat yechimiga nisbatini toping
A)-1/2 B)-1/5 C) -1/4 D) -1/3
9. Muntazam oltiburchakning tomoni √108 sm bo'lsa, unga tashqi va ichki chizilgan aylana radiuslarining nisbatini toping.
A) B) C) D)
10. Agar 2 ≤ x ≤y≤ z≤t≤ 128 bo’lsa ifodaning eng kichik qiymatini toping.
A) 0.75 B) 1.6 C) 0,5 D) 0.25
11. f(x+2)=2(2(f(x)+1)), f(2)=4 f(6)=?
A) 46 B ) 72 C) 74 D)66
12. 4,6(6) soni marta orttirilgan bo’lsa, u qanchaga ortgan?
A) 5,(3) B) 6,(3) C) 6,(3) D) 5,3
13. Arifmetik progressiyada a₁+a₃+a₅+...+a₉=50, a₂+a₄+a₆+...+a₁₀=75 bo'lsa, d ni toping.
A) 6 B ) 5 C)15 D) 13
14. f (x)=x⁴+e^2x, f (x)–?
A) +4x² B ) e^2x +x⁴ C)2e^x+3x D) 2e^2x+4x³
15. 4¹⁰∙15³∙25⁸ ko'paytma necha xonali son bo’ladi?
A ) 20 B ) 23 C)22 D) 21
16.
A) (-2;0) B)[-3;-1] C) [0;2] D) (0;2)
17. Agar 2^x =a bo'lsa, ni a orqali ifodalang.
A) B ) C) D)
18. ni soddalashtiring
A)2 B) 1 C ) D)a
19. Agar bo'lsa, ni toping.
A)2/b B) -2/b C) 1/b D)-1/b
20. Rombning diagonallari 6 va 4 ga teng bo'lsa, uninig yuzini toping.
A ) 12 B ) 16 C)24 D) 10
21. Agar bo‘lsa, ni toping. (r∈R)
A ) 2786 B ) 2794 C ) 27 D) 8
22. arcsinx/2>arcsin(x-1) tengsizlikni yeching
A) [-1; 1 ] B)[0;1/2) C)[0;2) D)(1/2;1]
23. ni hisoblang.
A ) ½ B) -1/2 C)1/4 D) 1
24. 4(n-l) €' N son 1, 2, 3, 4, 5, 6, 8, 10 va 201 ga qoldiqsiz bo’linsa, 11 ning kichik natural qiymatini toping.
A)27 B) 28 C)31 D)25
25. lfodani soddalashtiring bunda
A ) ½ B ) 2 C) 1 D) 0
26. Ishchi har kuni kunlik rejada ko'rsatilganidan 25 ta detal ortiq yasab, uch kunda rejadagi 7 kunga mo’ljallanganidan 15 ta ortiq detal yasadi. Ishchi har kuni nechtadan detal yasagan? ,
A ) 40 B ) 15 C) 44 D)47
27 y=3ctgx funksiyaning F(π/2)=9 shartni qanoatlantiruvchi boshlang'ichini topib, F(5π/2) ning qiymatini toping.
A) 12 B ) 9 C)18 D) 10
28. tengsizlikni yeching.
A) x<3/4; 43/4 C) -430. bo’lsa, a ning qiymatini toping.
A) 10 B ) 30 C) 6 D ) 15
29. x va 84 sonlarining eng kichik umumiy karralisi 336 ga eng katta umumiy bo'luvchisi esa 12 ga teng. x ni toping.
A) 24 B ) 48 C) 60 D 16
30.bo'Isa. a ning qiymatini toping.
A) 10 B ) 15 C)30 D) 6
31. ASCII yoyilmasi to'g ri korsatilgan qatorni ko’rsating:
A) American Standart Computer for Information Interchange
B) American Special Code for Information Interchange
C) American Standart Code for Information Interchange
15) American Standart Code for Information Integer
32 2 ta mushuk 2 soatda 2 ta sichqonni yeydi. 4 ta mushuk 4 soatda nechta sichqonni yevdi?
A) 2 B ) 8 C )4 D) 6
33. Faylga yo’l berilgan: C :\My pictures\klass\picture bmp Fayl nomini ko'rsating.
A)C: B) My pictures C) klass D) picture.bmp
34. MS Exsel 2003 dasturida A1 katakda 8, A2 katakda 7. A3 katakda 6ni qiymati berilgan bo'lsa, =ПРОИЗВЕД(A1:A3) formula bo'yicha A4 katakda qanday natija hosil bo’lgan.
A) 336 B ) 335 0 338 D)48
35. HTML- hujjatda matnni qalin shirift
ko’rinishda yozish uchun uni qaysi HTML
teglar orasida olish zarur0
A)B)
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C)... D) ,,.

36. Paskal tilida quyidgi dastur bajarilishi natijasida ekranda chiqariladigan axborotni aniqlang:
Label a; Var k,b,c:string[6]; Begin K:=20;B:=14;goto a; C:=01.08; write (C:2); a: \vrite(K:l,B:2); end
A) 01.08.2014 B) 01.08 C)2014 D)214