REPITITSION TEST 3
JASUR ERGASHEV
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@matematika_informatika
1-variant.
MATEMATIKA
1.
( x + y )
2
<
x
2
+
y
2
bo`lsa, quyidagilarning qaysi biri doimo
to`g`ri bo`ladi?
A) x>y>0 B) x<0
2
2
D) x
2
>y E) xy<0
2.
4 x
2
+(
3−m) x +m−2=0
tenglama ildizlarining teskarilari
yig`indisi -1/2 ga teng bo`lsa, m ni toping?
A) 6 B) 4/3 C) 2/3 D) 8/3 E) 5/7
3. Ikki xonali sonning ketiga shu ikki xonali son ketma-ket ikki
marta yozilishi natijasida hosil qilingan olti xonali son, berilgan
ikki xonali sondan necha marta katta?
A) 10101 B) 11011 C) 111 D) 1011 E) 1110
4. OY o`qiga parallel bo`lib
A (2018
;−2019 )
nuqtadan o`tuvchi
to`g`ri chiziq tenglamasini toping?
A)
x=−2019
B)
y=−2019
C)
x=2018
D)
x=2019
E)
y=2018
5.
x
2
−
7
x+12=0
tenglamaning ildizlari
tgα
va
tgβ
bo`lsa,
tg(
α +
β)
ning qiymatini toping.
A)
1
2
B)
−
√
2
2
C)
1
D)
−
7
11
E)
7
11
6. Eritma tarkibida 60 gr tuz bor. Unga 400 gr toza suv qo`shilsa,
tuzning konsentratsiyasi 1,5 marta kamayadi. Hosil bo`lgan
eritmaning og`irligini aniqlang?
A) 800 B) 1200 C) 9000 D) 1000 E) aniqlab bo`lmaydi
7.
(
3−x)
3
x−5
3−x
<
1
tengsizlikni yeching.
A)
(−
∞;
7
4
)
∪(2
;3)
B)
(−
∞;
5
3
)
∪(2
;3)
C)
(
2 ;3)
D)
(−
∞;
5
3
)
E)
(−
∞;2)
∪(2
;3)
8.
tga=
√
x +5
2
;
tgβ=
√
x−5
2
va
α +
β=45
°
tenglamani
qanoatlantiruvchi x sonining nechta natural bo`luvchisi bor?
A) 0 B) 3 C) 1 D) 14 E) 31
9.
1
5−2 lgx
−
2
1+lgx
=
1
tenglama ildizlarining ko`paytmasini
toping?
A) 1/100 B) 100 C) 10 D) 1/10 E) 1
10.
9
2 x +2
+
x
x−1
≥
1−3 x
2−2 x
tengsizlikning nomanfiy yechimlari
nechta?
A) 0 B) 8 C) 7 D) 6 E) 1
11.
n
ta hadining yig`indisi
n
2
+
2
n
bo`lgan arifmetik
progressiyaning umumiy hadini aniqlang?
A)
2
n+1
B)
3
n−2
C)
2
n+3
D)
2 n−1
E)
3 n−1
12.
{
√
x+
y
2
+
√
x−
y
3
=
14
√
x+ y
8
−
√
x−
y
12
=
3
tenglamalar sistemasi yechimlari
ayirmasini hisoblang.
A) 28 B) 48 C) 18 D) 12 E) 31
13.
x
2
+
px +
q
tenglamaning har bir ildizini 2 martadan oshirib,
so`ng 2 ga kamaytirib yangi kvadrat tenglama hosil qilindi. Agar
uning ozod hadi
4 ∙(q +64 )
ga teng bo`lsa, p ning qiymatini
aniqlang?
A) -60 B) 63 C) -30 D) 42 E) -20
14.
√
a
2
(2018−a)
va
a
√
(
2018−
a)
ifodalar qaysi oraliqda teng
bo`ladi?
A)
¿
B)
¿
C)
¿
D)
[
0 ;2018]
E)
¿
15. j parametrning qanday qiymatida
(
x
2019
+
x
2018
+
x
2017
+
…+x+1)∙( x− j)
ifoda
ko`phad ko`rinishida yozilganda ko`phadda
x
2018
qatnashmaydi?
A) -2 B) 2 C) 0 D) -1 E) 1
16.
[
2 x+1
2
]
<
x
tengsizlikni qanoatlantiruvchi natural sonlar
nechta? [a]-a sonining butun qismi.
A) 2 ta B) 3 ta C) 1 ta D) 0 ta E) aniqlab bo`lmaydi
17.
(
3
5
∙ x +6
20
+
9
)
:
3
5
=
1
tenglamani yeching.
A)
−
290
B)
2 90
C)
209
D)
−
209
E)
−
320
18.
sin 9 x+cos 5 x−sinx
cos 9 x−sin 5 x−cosx
=
?
A)
tg5 x
B)
−
ctg 5 x
C)
−
tg5 x
D)
tg 4
x
E)
ctg 4
x
19.
x
√
100+
x
√
25=2
x
√
50
tenglamaning nechta ildizi bor?
A)
∅
B) 1 C) 2 D) aniqlab bo`lmaydi E) cheksiz ko`p
20.
y=2018
x−2019
funksiya
y=
ax+
b
funksiyaga
perpendikulyar va
y=cx+d
funksiyaga parallel bo`lsa
b+
c
ning
qiymatini aniqlang?
A) 2018 B) 2019 C) 1 D) -1 E) aniqlab bo`lmaydi
21. Rasmda
f (
x )
funksiyaning grafigi keltirilgan.
f (
x )
funksiya
grafigiga [-3; 5] oraliqda OX o`qiga parallel bo`lgan nechta urinmasi
bor?
A) 7 B) 6 C) 5 D) 4 E) 8
22.
cos 6 x +cos 4 x=0
tenglamani yeching.
A)
±
π
10
+
πk
5
;
π
2
+
2
πk
B)
π
10
+
πk
5
C)
(−
1)
k
π
10
+
πk
5
;
π
2
+
πk
D)
π
10
+
πk
5
;
π
2
+
πk
E)
π
10
+
πk
5
;
π
2
+
πk
2
23.
{
x
√
y
=
y
y
√
y
=
x
4
sistema ildizlarini ifodalovchi nuqtalar orasidagi
masofani toping? (x>0)
A)
√
12
B)
√
10
C)
2
√
2
D)
√
2
E) 3
24.
sinx=
|
2018 x
|
tenglama nechta ildizga ega?
A) 1 B) 2 C) 0 D) 3 E) aniqlab bo`lmaydi.
25.
|
x−1
|
+
|
x+1
|
+
|
x−2
|
+
|
x +2
|
+
…+
|
x−100
|
+
|
x+100
|
=
200
x
tenglamani yeching.
A)
x=100
B)
x ≥ 10
C)
x ≥ 100
D)
x >10
E)
x <100
26. Dastlabki 10 ta ketma-ket tub sonlar yonam-yon yozildi. Xosil
bo`lgan sondan 6 ta raqam o`chirildi. Natijada eng katta son hosil
bo`ldi. Hosil bo`lgan sonning 3-raqamini toping?
A) 3 B) 2 C) 1 D) 6 E) 5
27.
Agar 0 ga teng bo`lmagan haqiqiy sonlar uchun
xyz=
x +
y +
z
va
yz=
x
2
sharni qanoatlantirsa x ning eng kichik qiymatini toping?
A) -1 B) 1 C)
−
√
3
D)
√
2
E) aniqlab bo`lmaydi
28. Quyidagilarning qaysi biri birhadning standart shakli
hisoblanadi?
A)
2018 ∙ x
2
∙ y ∙ x
B)
2018
∙ a
2
∙ 2 b
C)
−
2018 ∙ n
3
∙ m
D)
−
2019 ∙ a
3
∙ m ∙(−
b )
E)
2
2
b ∙2019 ∙ a
2
29.
(a+ b)
6
ko`phadni o`rtada turgan ifodasining koeffitsiyentini
aniqlang? A) 50 B) 20 C) 10 D) 30 E) 31
30.
√
2
x
∙
3
√
4
x
∙ 0,125
1
x
=
4
3
√
2
tenglama ildizining beshlanganini
toping? A) -1 B) -15 C) -3 D) 15 E) 0
31.
Ucell kompaniyasida 4 xil tarif mavjud. 1. Oddiy 2. Fresh 3.
Ko`proq muloqot 4. VIP va ular uchun to`lovlar quyidagi jadvalda
berilgan. Azamat kuniga 40 daqiqa gaplashadi va 10 ta sms jo`natadi.
Aziza kuniga 20 daqiqa gaplashadi va 5 ta sms jo`natadi. Alisher
kuniga 70 daqiqa gaplashadi va 40 ta jo`natadi. Azamat, Aziza va
Alisher qaysi raqamdagi tariflarga ulanishi kerak?
Tarif
lar
№
Abonent
to`lovi
1 sms
narxi
1 daqiqa
so`zlashuv
1
0,1 $
0,02 $
0,03 $
2
0,5 $
0,01 $
0,02 $
3
0,8 $
0,01 $
0 $
4
3 $
0 $
0 $
A) 2, 3, 4 B) 1, 1, 4 C) 3, 3, 4 D) 3, 1, 3 E) 1, 2, 4,
32.
2019 x
3
−
2018 x+2019 x
2
+
1=( x +1)∙ P (x )+2019
tenglamani qanoatlantiruvchi P(x) ko`phad quyidagilardan qaysi
biriga teng?
A)
2018 x
2
+
2019
B)
2019 x
2
−
2018
C)
2019 x
2
+
2018
D)
2018 x
2
−
2019
E)
2019 x
2
+
2019
33.
y=−2
x−1
va
y=−
x−2
to`g`ri chiziqlar orasidagi
burchakni aniqlang? A)
α=arctg
1
3
B)
α=arccos
1
3
C)
π
4
D)
π
3
E)
α=
arctg 3
34. Arifmetik progressiya uchun
a
1
=
2,5
b
1
=
7,5
va
a
100
+
b
100
=
10
bo`lsa
a
1
+
b
1
, a
2
+
b
2
, a
3
+
b
3
… a
n
+
b
n
ketma-
ketlikning dastlabki 500 ta hadi yig`indisini toping?
A) 100 B) 500 C) 5000 D) 1000 E) 10
35.
ax
2
+
bx +
c
kvadrat uchhadni ko`paytuvchilarga ajrating.
D>0
.
A)
a
(
x−x
1
) (
x−
x
2
)
B)
(
x−x
1
) (
x−
x
2
)
C)
a /
c
(
x−x
1
) (
x−
x
2
)
D)
a
(
x−x
1
)
2
E)
a /
c
(
x−x
1
)
2
36.
Ko`paytmasi 3192 ga, umumiy natural bo`luvchilari 1 ga teng
bo`lgan 2 ta ketma-ket natural sonlar yig`indisini toping?
A) 113 B) 117 C) 98 D) 97 E) 132