Судоплатов С.В., Овчинникова Е.В. Дискретная математика
.pdfВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
131 |
Вариант 13
1.A [ (B n C) = (A [ B) n (C n A); A; B 6= ?,
(A £ B) [ (B £ A) = (C £ D) ) A = B = C = D.
2.4n ¡ 1 кратно 3 для всех n > 0.
3.!2 » Z.
4.P1 = fha; 3i; ha; 2i; hb; 2i; hb; 3i; hc; 1i; hc; 4ig,
P2 = fh1; 1i; h1; 2i; h2; 2i; h3; 3i; h4; 1i; h4; 4ig.
5.P µ R2, hx; yi 2 P , x2 > y.
6.hQ; +; ¡; :; 13i.
7.B = hZ; +; ¢i, X = f¡2; 16g.
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10.(x _ y) # (y ! x), ((xjy) $ z) © xy.
11.x ^ (yjz) и (x ^ y)j(x ^ z).
12.(z ! x) $ (yjx).
13.f(0; 0; 0) = f(1; 0; 1) = f(1; 1; 1) = 0.
14.(0011 0011 1101 1101).
15.J = fx © y; x _ yg.
16.(A © B) n (A © C) = A n (B © C).
132 |
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
Вариант 14
1.A \ (B n C) = (A \ B) n (A \ C),
(A £ B) [ (C £ D) µ (A [ C) £ (B [ D).
2.4n + 15n ¡ 1 кратно 9 для всех натуральных n.
3.!2 » Z2.
4.P1 = fha; 2i; ha; 4i; hb; 3i; hc; 1i; hc; 2ig,
P2 = fh1; 1i; h1; 3i; h2; 4i; h3; 1i; h3; 4i; h4; 3i; h4; 2ig.
5.P µ Z2, hx; yi 2 P , x2 + y2 = 1.
6.hR n f0g; +; :i.
7.B = hQ; +; ¢i, X = f2; 12g.
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10. (x © y) ! (y # x), ((xjy) _ z) $ xy.
11. x _ (y ! z) и (x _ y) ! (x _ z).
12. (xjy) © (z ! x).
13. f(1; 0; 1) = f(0; 1; 0) = f(1; 1; 1) = 0.
14. (1011 1011 1100 1111).
15. J = fx ! y; x ^ yg.
16. (A n B) © (A n C) = A © (B n C).
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
133 |
Вариант 15
1.A \ B = A [ B,
U2 n (C £ D) = (C £ U) [ (U £ D).
2.11n+1 + 122n¡1 кратно 133 для всех n > 0.
3.(0; 1] » [0; +1).
4.P1 = fhb; 1i; hb; 3i; hc; 1i; hc; 2i; hc; 3i; hc; 4ig,
P2 = fh1; 1i; h2; 2i; h2; 3i; h2; 4i; h3; 2i; h3; 3i; h3; 4i; h4; 2i, h4; 3i; h4; 4ig.
5.P µ Z2, hx; yi 2 P , x + y кратно 3.
6.h!; :; ¡1i.
7.B = hR2; +; ¡i, X = fh1; 2i; h0; 1ig.
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10.x $ (y ! (y # x)), ((xjy) _ z) © xy.
11.x _ (yjz) и (x _ y)j(x _ z).
12.(z ! x) $ (xjy).
13.f(1; 0; 0) = f(1; 1; 0) = f(0; 1; 1) = f(0; 1; 0) = 1.
14.(0101 0011 0101 1110).
15.J = fx $ y; xjyg.
16.(A [ B) © (A [ C) = A [ (B © C).
134 |
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
Вариант 16
1.(A \ B) [ (A \ B) = (A [ B) \ (A [ B) = A;
(A [ B) £ (C [ D) = (A £ C) [ (B £ C) [ (A £ D) [ (B £ D).
2.9n+1 ¡ 8n ¡ 9 кратно 16 для всех n > 0.
3.2! + ! = 2!.
4.P1 = fha; 1i; ha; 2i; ha; 4i; hb; 2i; hb; 4i; hc; 3ig,
P2 = fh1; 1i; h2; 2i; h2; 4i; h3; 3i; h4; 4i; h4; 2ig.
5.P µ Z2, hx; yi 2 P , x ¡ y кратно 2.
6.h!; +; ¢; :i.
7.B = hQ; +; ¢i, X = f12g.
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10.x # (y ! (yjx)), x © (y _ z $ xy).
11.x _ (y $ z) и (x _ y) $ (x _ z).
12.(z ! x) © (xjy).
13.f(0; 1; 1) = f(1; 0; 0) = f(1; 0; 1) = 0.
14.(0011 1101 0011 1100).
15.J = fx © y; x _ yg.
16.(A n B) © (A n C) = A \ (B © C).
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
135 |
Вариант 17
1.(A n B) n C = (A n C) n (B n C);
A µ B, C µ D ) A £ C µ B £ D.
2.n(2n2 ¡ 3n + 1) кратно 6 для всех натуральных n.
3.2! + n = 2!.
4.P1 = fha; 2i; ha; 3i; ha; 4i; hc; 3i; hc; 1i; hc; 4ig,
P2 = fh1; 4i; h2; 3i; h2; 1i; h3; 4i; h4; 2ig.
5.P µ Z2, hx; yi 2 P , 2x = 3y.
6.hR; ¡; ¢; :i.
7.B = h!; +; ¢i, X = f2g.
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10.x $ (y ! (y © x)), xj(y _ z # xy).
11.x © (y $ z) и (x © y) $ (x © z).
12.((x # y) ! z) © y.
13.f(0; 0; 1) = f(1; 0; 0) = f(1; 1; 0) = 0.
14.(1011 1111 1011 1100).
15.J = fx ^ y; x ! yg.
16.(A n B) [ (A n C) = A n (B © C).
136 |
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
Вариант 18
1.A © (B © C) = (A © B) © C,
(A n B) £ C = (A £ C) n (B £ C).
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3.jZ2j = !.
4.P1 = fha; 1i; ha; 2i; hb; 3i; hb; 4i; hc; 3i; hc; 4ig,
P2 = fh1; 1i; h1; 4i; h2; 1i; h2; 2i; h2; 4i; h3; 3ig.
5.P µ Z2, hx; yi 2 P , x + y нечетно.
6.hQ; +; ¡; p2i.
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10. x ! (yj(y © x)), x $ (y _ z # xy).
11. x © (y ! z) и (x © y) ! (x © z).
12. ((xjy) ! z) © y.
13. f(0; 0; 1) = f(0; 1; 1) = f(1; 1; 1) = 0.
14. (0011 1110 0101 0101).
15. J = fxjy; x $ yg.
16. (A n B) [ (B n C) = (A [ C) n B.
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
137 |
Вариант 19
1.A \ B = (A [ B) \ A,
(A \ B) £ (C \ D) = (A £ C) \ (B £ D).
2.n5 ¡ n кратно 5 для всех натуральных n.
3.! ¢ n = !.
4.P1 = fha; 2i; ha; 3i; ha; 4i; hb; 1i; hb; 2i; hb; 4ig,
P2 = fh1; 1i; h1; 3i; h1; 4i; h2; 2i; h2; 3i; h3; 2i; h3; 3i; h4; 3i, h4; 4ig.
5.P µ Z2, hx; yi 2 P , x ¡ y четно.
6.hR+; p ; :; ¢i, где R+ = fx 2 R j x > 0g.
7.B = hQ n f0g; :i, X = f12; 14g.
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x # (y ! (y _ x)), xj(y $ z © xy). |
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x © (yjz) и (x © y)j(x © z). |
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f(0; 0; 0) = f(0; 0; 1) = f(1; 1; 0) = 0. |
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(0011 0011 1100 1111). |
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J = fx © y; x _ yg. |
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(A \ B) © (B [ C) = (A n B) © C. |
138 |
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
Вариант 20
1.A \ (B © C) = (A \ B) © (A \ C),
(A \ B) £ C = (A £ C) \ (B £ C).
2.62n¡1 + 1 кратно 7 для всех n > 1.
3.jA £ Bj = jB £ Aj.
4.P1 = fha; 3i; hb; 4i; hb; 3i; hb; 1i; hb; 2i; hc; 2ig,
P2 = fh1; 1i; h1; 3i; h2; 4i; h3; 1i; h3; 3i; h4; 2ig.
5.P µ Z2, hx; yi 2 P , 5x = 2y.
6.hQ+; +; ¢; ¡1i, где Q+ = fx 2 Qjx > 0g.
7.B = hZ; +; ¡i, X = f3; 4g.
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10.x © (y ! (y $ x)), x # (y _ zjxy).
11.x # (y $ z) и (x # y) $ (x # z).
12.((x # y) ! z) $ y.
13.f(0; 0; 0) = f(0; 1; 0) = f(1; 1; 1) = 0.
14.(1100 0101 0011 0011).
15.J = fx ^ y; x ! yg.
16.(A [ B) n (A [ C) = A n (B [ C).² ²
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
139 |
Вариант 21
1. A © (A © B) = B,
A £ (B \ C) = (A £ B) \ (A £ C).
2. 13 + 23 + 33 + : : : + n3 = n2(n+1)2 .
4
3.jZ £ !j = !.
4.P1 = fha; 3i; hb; 4i; hb; 3i; hc; 1i; hc; 2i; hc; 4ig,
P2 = fh1; 2i; h1; 3i; h1; 4i; h2; 3i; h4; 3i; h4; 2ig.
5.P µ Z2, hx; yi 2 P , x = ¡y.
6.hZ¡; +; ¡i, где Z¡ = fx 2 Z j x < 0g.
7.B = hR3; £i, X = fh1; 0; 0i; h0; 0; 1ig, £ операция векторного произведения.
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(x # y)j(y _ x), (x $ y) © (z ! xy). |
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xj(y © z) и (xjy) © (xjz). |
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((x # y) ! z) $ y |
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f(0; 0; 0) = f(0; 0; 1) = f(1; 0; 0) = f(1; 1; 0) = 1. |
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(0010 0111 1010 1101). |
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J = fx _ y; x $ yg. |
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(A n B) [ (B n C) = (A n B) [ C. |
140 |
ВАРИАНТЫ КОНТРОЛЬНОЙ РАБОТЫ |
Вариант 22
1.A [ B = A © B © (A \ B),
A £ (B n C) = (A £ B) n (A £ C).
2.8n ¡ 1 кратно 7 для всех натуральных n > 1.
3.Множества точек двух окружностей эквивалентны.
4.P1 = fha; 1i; hb; 2i; hb; 3i; hc; 1i; hc; 3i; hc; 4ig,
P2 = fh1; 1i; h1; 2i; h1; 3i; h2; 2i; h2; 3i; h3; 3i; h3; 4i; h4; 1i, h4; 4ig.
5.P µ Z2, hx; yi 2 P , x + 1 = y.
6.hZ¡; +; ¢i, где Z¡ = fx 2 Z j x < 0g.
7.B = hZ; +; ¢i, X = f¡2; 7g.
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x ! (yjz) и (x ! y)j(x ! z). |
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f(1; 0; 1) = f(0; 1; 1) = f(0; 1; 0) = 0. |
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(0011 1111 0011 1100). |
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J = fx © y; x _ yg. |
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16. |
(A n B) [ (A \ C) = A n (B [ C). |