Va to`plamlarning birlashmasini toping.; b c ; d

A)2.2 B)1.8; C)2; D)2.4;
12. Tekislikning kesmalar bo`yicha tenglamasi berilgan qatorni toping.
A) B) x+y+z = 1; C) ; D) x²+y²=R^2;
13. Uch vektor aralash ko`paytmasining geometrik ma`nosi ….. ifodalaydi.
A) piramidaning hajmini; B) uchburchakning yuzini; C) parallelogrammning yuzini;
D) parallelopepidning hajmini.
14. Tenglamasi x²+y²-6x-8y+9=0 bo’lgan aylana markazidan kordinatalar boshigacha bo’lgan masofani toping.
A)5 B)4; C)3; D)7 ;
15. A(3; 4; 1) nuqtadan = 0 tekislicgacha bo’lgan masofani toping
A) B) 6 C) D) 2

16.A={kimyo} B={matematika} A/B=?

A)(k,i,m,y,o) ; B)(y,o) C)(k,m,i) ; D)(a,t,m,k);
17. .|3 -2|
|-4 5|=?
A)23; B)7 C)13; D)18;
18.A(2:5) B(5:9) nuqtalar orasidagi masofani toping.
A)25; B)10; C) 3; D)5.
19.Giperbola tenglamasi tog’ri keltirilgan javobni ko’rsating.
A)x2/a2+y2/b2=1;
B)x2/a2-y2/b2=1
C)x2+y2=r2;
D)x2-y2=r2;
20. .M(2:-2) va N(-4:1) nuqtalardan o’tuvchi to’g’ri chiziq qaysi choraklararda yotadi?
A)II;III;IV B)I;III;IV ; C)I;II;IV; D)I;II;III;
21. .ax-3y=1
ax-2y=2 tenglamalar sistemasini yeching.
A)(4:a); B)(a:1) ; C)(a/4:1); D)(4/a:1).
22. .Ushbu 3sin2x funksiya uchun boshlang’ich funksiyaning umumiy ko’rinishini ko’rsating.
A)-2/3cos2x+C;
B)-3/2cos2x+C
C)3/2sin2x+C;
D)-3/2sin2x+C;
23. .|2 -3 1|
|6 -6 2|
|2 -1 2| determinantni hisoblang.
A)12; B)10 C)8; D)16;
24.OACB to’g’ri to’rtburchakning OA va OB tomonlariga I va j birlik vektorlar qo’yilgan .Agar OA ning uzunligi 3 ga va OB ning uzunligi 4 ga teng bo’lsa,CO vektorni I va j orqali ifodalang.
A)3i+4j ; B)-3i-4j C)3i-4j; D)4j-3i;
25. .Fokuslari OX o’qida bo’lgan giperbolaning mavhum o’qini uzunligi 12 ga teng bo’lsa va u (20;8) nuqtadan o’tsa,bu giperbolaning tenglamasini tuzing.
A)x2/144+y2/36=1;
B)x2/100-y2/36=1;
C)x2/100+y2/36=1;
D)x2/144-y2/36=1.
26. 3x-2y=-8
X+3y=1 (x;y) sonlar jufti sistemaning yechimi bo’lsa,y-x ni toping.
A)0; B)-1; C)-2.5; D)3.
27. .|cosα sinα|
|sinα cosα| determinantning qiymatini toping.
A)cos2α B) 1; C)-cos2α; D) sin2α;
28.Agar f(x)=x3+5x2+4x+2 bo’lca, f ‘ (x)=y(1) tenglamaning eng kichik ildizini toping.
A)-6 B)-2 C)-4 D)-1
29.M nuqta BC ning o’rtasi ,N nuqta esa AC o’rtasi bo’lsin,OA=3 va OB=4 bo’lganda MN vektorni aniqlang.
A)-0,5 B)5; C)0,5; D)5,5;
30. .A(2:3); B(4:-1); C(6:5) nuqtalarda o’tuvchi shaklning perimctrini toping.
A)2√5+√10 B)4√5+√10 C)4√5+2√10 D)2√5+2√10