Ifodani qiymatini ko`rsating. A b c d 5 e 4

1-variant
1. ifodani qiymatini ko`rsating.
A) 1 B) 2 C) 3 D) 5 E) 4
2. ni soddalashtiring.
A) B) C)
D) E) 1
3. a = log₃₆108 bo`lsa, log₂3 ni a orqali ifodalang.

4. va bo`lsa, a, b va c sonlar uchun quyidagi munosabatlarning qaysi biri o`rinli?
A)cxx²–2x²+2–2^x=0 tenglamaning ildizlari ko`paytmasini toping.
A) 1 B) –1 C) 2 D) –2 E) –0,5
6. Agar 3^5x+1+3^5x–1=30 bo`lsa, ning qiymatini toping.

7. 9∙16^x–7∙12^x–16∙9^x=0 tenglamaning ildizlari yig`indisini toping.
A) 2 B) –2 C) 3 D) –1 E) 1
8. tenglamaning ildizini nisbatini toping.
A) –1 B) –2 C) –3 D) 1 E) 3
9. tenglamani ildizi bitta 1 ga teng bo`lsa, ikkinchi ildizini toping.
A)–log₂6 B)log₂3 C)log₃6 D) E)
10. k ning qanday qiymatida f(x)=|log₅(k–x)| va g(x)= – |x–7| funksiyaning grafiklari OX o`qida yotgan nuqtada kesihsadi?
A) 1 B) 4 C) 5 D) –1 E) 8
11. e^–x=x–2 tenglamani nechta ildizi bor?
A)1 B)2 C)3 D)ildizi yo`q E)aniqlab bo`lmaydi
12. |log₂x|= –x+4 tenglamani ildizi nechta?
A) 1 B) Ø C) cheksiz ko`p D) 2 E) 3
13. tenglamaning yechimi qaysi oraliqqa tegishli?
A)(–∞;–2) B)(–1;0) C)(1;∞) D)(–2;–1) E)(0;1)
14. tengsizlikni yeching.
A) (–∞;–1) B) (1;∞) C) (–∞;–1]U[1;∞)
D) (–∞;–1)U(1;∞) E) [–1;1]
15. tengsizlikni yeching.
A)( ;0) B)(0,2;∞) C)(–∞;0) D)(–∞; ) E)(0; )
16. x ning nechta natural qiymatida tengsizlik o`rinli bo`ladi?
A) Bunday qiymatlar yo`q B)1 C) 2 D) 2 E) 4
17. Quyidagi sonlardan qaysi biri 1 dan katta?
a=0,7^2,3∙0,3^0,8; b=3,2^–4,2∙1,2^–0,8; c=0,7^–1,2∙0,6^–0,4;
d=0,6^0,4∙0,3^0,6; e=0,4⁰∙3,5^–1,3;
A) a B) b C) c D) d E) e
18. x²5^x – 5^2+x<0 tengsizlikni yeching.
A) (–∞;–5) B) (5;∞) C) (–∞;–5)U(5;∞)
D) (–5;5) E) (­–∞;∞)
19. tenglamalar sistemasini yeching.
A) (2;3) B) (2;4) C) (4;2) D) (3;2) E) (2;2)
20. tenglama nechta ildizga ega?
A) Ø B) 1 C) 2 D) 3 E) 4