Zadania powtórzeniowe, s. 41-46
1. a) S-T = x6 - 1 |x4 + 2x2; 5
b) S - T = x4 + 3\/2x3 - jx2; -9
2. a) ±x3-x2 + fx b) 18x3-15x2 + l
c) x3 + 2x2 - x - 3 d) 20x3 + 4x2 + 25
3. a) 5x2 + x-l b) -x6 - 6x4 - x3 - 9x2 -7x-l
4. a) -120 b) 11 c) -80 d) 15
5. a) -4 b) -2 lub 0
6. a) -2 b) -3
7. a) x = 4 b) x = -3 c) x = -6
8. a) 2 b) 1 c) 3 d) 2 e) 2 f) 3
9. a) x = -5, x = 0, x - 5 b) x = x = 0, x = \ c) x =-|, x = 0, x = | d)x = 0, x = 3
e)x = -^,x = 0 f)x = 0, x-\
g) x = -2, x = 0, x = 3 h) x = -3, x = -1, x = 0
i) x = -1, x = -x = 0
10. a) x = -1, x = 0, x = 4 b) x = -3, x = -2, x = 0, c) x = -2, x = x = 0 d) x = -|, x = 0, x = | e)x = 0, x = | f) x = x = -1, x = 0
n.a)y=f b)r=-| c)
12. a) A, B b) C c) B
13. a) /min(3) = 1) /max(l) = 3
b)/min(l)=-6,/max(3)=-2
14. a) /(x) > -2 dla x 6 (-2;2),
f(x) <1 dla X 6 (—oo; -2) U (—1; oo)
b) x~~\
15. a) D = R\ {0}, /(D) = R\ {-2}, maleje w (-oo;0) i w (0; oo)
b) D = R\ {0}, /(D) = R\{1}>
rośnie w (-oo;0) i w (0;oo)
c) D = R\{1}, /(D) = R\{0>, maleje w (-oo; 1) i w (l;oo)
d) D = R\{2}, /(D) = R\ {0}, rośnie w (-oo;2) i w (2;oo)
16. a) k = -5 b) k = 7 c) k = -2,5
17. a) k = -2 b) k = | c) k = ^
18. a) D = R\{-i,0}, -3
b) D = R \ {-2,0,2},
= ^t>-2
d) D = R\{2}, f±§,-l
19. a)D = R\{0}, ^
b) D = Rx{-4,4},;^_
c) D = Rn{-3,-1},^3
d) D = R\{-5,2},
20. a) D = R \ {0,2},
b) D = R\ {-1,0}, 2x2 -2x
c) i) = Rs{-3,-j,0,3},^
21. a) x = 1 b) x = | c) x = ^
d) x = -l,x=-| e) x = -|, x= | f) x = -2, x = 5 g) x = 4 h) x = -1, x = | i) x = 1, x = |
22. a) a = | b)/(-|) = 1./(n/3 + l) = ^
23. 90 km/h
24. 45 km/h i 54 km/h
1. B 2. C 3. C 4. B 5. A 6. B 7. C 8. A
1. x = -3, x = 0, x = 3
2. a = -1
3. %/3
4. a = 9, należy
6. /(3|) = 0, /(x) ^0 dla x e (2;3|)
7. <? = 5
8. x = x = 2
9. m = 10
11. v = 20 km/h
1. m = 2\/3- 1
3. a)q = -2 b) x - 2 c)/(\/2-l) = 3\/2-2
4. a) /(x) = | - 2, D = R\ {0} b) /min(3) = -1
5. 24 osoby
6. 60 km/h
7. Basen w pierwszym hotelu ma wymiary 30mx8m. a w drugim - 35 m x 10 m lub basen w pierwszym hotelu ma wymiary 20 m x 12 m, a w drugim -25 mx 14 m.
8. 15 dni
176