1 Munosabatlar. Ekvivalent munosabatla
f 10 (x)=log a x 1.8.10
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- 0-topshiriqning ishlanishi: 1.9.0.
1.8.9. f 10 (x)=log a x 1.8.10. f 11 (x)=2*x+1 1.8.11. f 12 (x)=x 3
13 (x)=1/x 1.8.13. f 14 (x)=1/(x+1) 1.8.14. f 15 (x)=x 3 -4x 1.8.15. f 7 (x)=-cosx 1.8.16. f 8 (x)=2ctgx 1.8.17. f 9 (x)=3a x
1.8.18. f 10 (x)=2log a x 1.8.19 f 11 (x)=2*x-2 1.8.20. f 12 (x)=3x 3
13 (x)=1/2x 1.8.22. f 14 (x)=1/(x+2) 1.8.23. f 15 (x)=-x 3 -4x 1.8.24. f 1 (x)=3x 2 1.8.25. f 2 (x)=2lnx 1.8.26. f 3 (x)=-x*sinx 1.8.27. f 4 (x)=5tgx 1.8.28. f 5 (x)=12x+1 1.8.29. f 6 (x)=-sinx 1.8.30. f 3 (x)=2x*sinx 1.9. Sanoqsiz to‘plamlar quvvatni topish. 1.9.0. [1, 5] kesma quvvati aniqlansin? 1.9.1. B={1, 3, 5, …} to‘plam quvvati topilsin? 1.9.2. Z={…, -2, -1, 0, 1, 2, …} butun sonlar to‘plami quvvati topilsin? 1.9.3. Q={ ,
m n
1.9.16. (-∞, -2) 1.9.17. (-∞, +1) 1.9.18. (-∞, +2) 1.9.19. (-∞, -3) 1.9.20. (0, +∞) 1.9.21. (+4, +∞) 1.9.22. (+2, +∞) 1.9.23. (+5, +∞) 1.9.24. (+3, +∞) 1.9.25. (-∞, -4] 1.9.26. (-∞, -1] 1.9.27. [5, +∞) 1.9.28. (-3, +4] 1.9.29. [-1, +3) 1.9.30. [-4, +5) 0-topshiriqning ishlanishi: 1.9.0. [1, 5] kesma quvvati aniqlash uchun [1;5] kesma bilan [0;1] kesma o‘rtasida o‘zaro bir qiymatli moslik o‘rnatish lozim. 4 1
) ( x x f funksiya [1;5] oraliqni [0;1] oraliqqa akslantiruvchi biyektiv funksiya bo‘ladi (ushbu tasdiqni isbotlash talabaga vazifa). Shunday qilib, [1;5] kesmaning tartibi [0;1] kesma tartibiga teng, [0;1] kesmaning quvvati esa continuumga teng. ^ ]
; 0 [ ] 5 ; 1 [
1.10. Funktsiyalar kompozitsiyasi. Quyida keltirilgan f, g: R→R funksiyalar uchun f*g, g*f kompozitsiyalar aniqlansin? 1.10.0. lsa bo'
1 x agar
'
1
) ( 3 x lsa bo x agar x x f
lsa.
bo'
-8 agar x x
2 lsa,
bo'
8 x agar
x - 2 ,
lsa bo'
8 agar x
) (
x g 1.10.1. lsa. bo'
0 agar x x
- 1 lsa, bo'
0 agar x
, 1 ) ( x x f
lsa.
bo'
1 agar x x
* 2 lsa, bo'
1 agar x
1 ) ( x x g
lsa. bo'
1 agar x x lsa,
bo'
1 agar x
, ) ( 2 x x f
lsa. bo'
2 agar x x - 4 lsa, bo'
2 agar x ) ( x x g
lsa. bo'
1 agar x
e lsa,
bo'
1 agar x
, ) ( 1 x - 2 x x f
lsa.
bo'
0 agar x
1 2x lsa,
bo'
0 agar x cosx
) (x g
lsa. bo'
0 agar x x - lsa, bo'
0 agar x
, sin
) (
x f
lsa. bo'
1 agar x 1 x - lsa,
bo'
1 agar x
1 - x - ) ( 2 x g
lsa.
bo'
1 agar x
2 x - lsa, bo'
1 agar x , ) ( 3
x f
lsa. bo'
1 agar x
sin lsa,
bo'
1 agar x
x - ) ( 2
x g
1.10.6. lsa. bo'
0 agar x 1 x lsa, bo'
0 agar x , 1 3 ) ( 2 x x f
lsa.
bo'
1 agar x
1 ) 1 ( lsa,
bo'
1 agar x
x ) ( 2
x g
lsa. bo'
0 agar x
1 x - lsa, bo'
0 agar x , 1 ) (
x f
lsa. bo'
2 agar x 2 lsa, bo'
2 agar x
2 - x - ) ( x x g
1.10.8. lsa. bo'
0 agar x
1 x - lsa, bo'
0 agar x , cos ) ( 2 x x f
lsa. bo'
2 agar x
lsa, bo'
2 agar x sinx ) ( x x g
lsa.
bo'
1 agar x
2 - x lsa, bo'
1 agar x , ) ( x x f
lsa.
bo'
0 agar x
1 1 lsa, bo'
0 agar x
x ) ( 2
x g
lsa.
bo'
1 agar x
2 x - lsa, bo'
1 agar x , ) ( x x f
lsa. bo'
1 agar x
lsa, bo'
1 agar x 2 x ) ( 2 x x g
lsa. bo'
0 agar x
1) ln(x
lsa, bo'
0 agar x , ) ( x x f
lsa. bo'
1 agar x
lsa,
bo'
1 agar x
2 x
( 2
x g
lsa. bo'
0 agar x
1 -
lsa, bo'
0 agar x , 1 ) (
x f
lsa.
bo'
1 agar x
1 ) 1 ( lsa,
bo'
1 agar x
x ) ( 2 2 x x g
lsa.
bo'
0 agar x x
- 1 lsa, bo'
0 agar x
, 1 ) ( x x f
lsa. bo'
2 agar x x - 4 lsa, bo'
2 agar x ) ( x x g
lsa. bo'
1 agar x x lsa,
bo'
1 agar x
, ) ( 2 x x f
lsa.
bo'
0 agar x
1 2x lsa,
bo'
0 agar x cosx
) (x g
lsa. bo'
1 agar x
e lsa,
bo'
1 agar x
, ) ( 1 x - 2 x x f
lsa. bo'
1 agar x 1 x - lsa,
bo'
1 agar x
1 - x - ) ( 2 x g
lsa. bo'
0 agar x x - lsa, bo'
0 agar x
, sin
) (
x f
lsa. bo'
1 agar x
sin lsa,
bo'
1 agar x
x - ) ( 2
x g
lsa.
bo'
1 agar x
2 x - lsa, bo'
1 agar x , ) ( 3
x f
lsa. bo'
2 agar x 2 lsa, bo'
2 agar x
2 - x - ) ( x x g
1.10.18. lsa. bo'
0 agar x 1 x lsa, bo'
0 agar x , 1 3 ) ( 2 x x f
lsa. bo'
1 agar x
sin lsa,
bo'
1 agar x
x - ) ( 2
x g
lsa. bo'
0 agar x
1 x - lsa, bo'
0 agar x , 1 ) (
x f
lsa. bo'
2 agar x
lsa, bo'
2 agar x sinx ) ( x x g
lsa.
bo'
0 agar x
1 x - lsa, bo'
0 agar x , cos ) ( 2 x x f
lsa. bo'
1 agar x
lsa, bo'
1 agar x 2 x ) ( 2 x x g
1.10.21. lsa. bo'
1 agar x
2 - x lsa, bo'
1 agar x , ) ( x x f
lsa. bo'
1 agar x
lsa, bo'
1 agar x 2 x ) ( 2 x x g
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