Т
ригонометрия
| 0 | | | | | | | | π | | | | | | | | 2 π |
| 0 | 30° | 45° | 60° | 90° | 120° | 135° | 150° | 180° | 210° | 225° | 240° | 270° | 300° | 315° | 330° | 360° |
sinx | 0 | 1/2 | 2/2 | Ö3/2 | 1 | Ö3/2 | Ö2/2 | 1/2 | 0 | -1/2 | -Ö2/2 | -Ö3/2 | -1 | -Ö3/2 | -Ö2/2 | -1/2 | 0 |
cosx | 1 | Ö3/2 | Ö2/2 | 1/2 | 0 | -1/2 | -Ö2/2 | -Ö3/2 | -1 | -Ö3/2 | -Ö2/2 | -1/2 | 0 | 1/2 | Ö2/2 | Ö3/2 | 1 |
tg x | 0 | 1/Ö3 | 1 | Ö3 | | -Ö3 | -1 | -1/Ö3 | 0 | 1/Ö3 | 1 | Ö3 | | -Ö3 | -1 | -1/Ö3 | 0 |
ctg x | | Ö3 | 1 | 1/Ö3 | 0 | -1/Ö3 | -1 | -Ö3 | | Ö3 | 1 | 1/3 | 0 | -1/Ö3 | -1 | -Ö3 | |
1
. sin2x + cos2x = 1 6. sin 2x = 2sin x*cos x 11. cos2x =
22.sinx ± siny =
26.
2. tg x*ctg x = 1 7. cos 2x = cos2x – sin2x 12. sin2x =
23. cos x + cos y =
27.
3. 1 + tg2x =
8. cos 2x = 2cos2 - 1 13.cos3x =
24. cos x - cos y =
28.
4. 1 + ctg2x =
9. cos 2x = 1 – sin2x 14. sin3x =
25. tgx tgy =
5
. tg x + ctg x =
10. tg 2x =
29. sin 3x = 3 sin x – 4 sin3x 30. cos 3x = 4 cos3x – 3 cos x
15. sin(x ± y) = sin x*cos y ± cos x *siny 19. sinx* siny =
31.
32.
16. cos(x + y) = cos x*cosy - sinx*siny 20. cosx*cosy =
1. sin x = 0, x = πn. 1. cos x = 0, x =
+ πn.
17. cos(x - y) = cos x*cosy + sinx*siny 2. sin x = 1, x =
+ 2 πn. 2. cos x = 1, x = 2 πn.
18. tg(x ± y) =
21. sinx*cosy =
3. sin x = -1, x = -
+ 2 πn. 3. cos x = -1, x = π + 2 πn.
4. sin x = a, x = (-1)narcsin a + πn 4. cos x = a, x = ± arcos a + 2 πn
К
вадратное уравнение: ax2 + bx + c = 0 ax2 + bx + c = a(x – x1)(x – x2) 1. tg x = 0, x = πn. 2. tg x = ± 1, x = ±
+ πn.
D =
X1,2 =
3. tg x = a, x = arctg a + πn.
Теорема Виета: x2 + px + q = 0; x1 + x2 = - p; x1 . x2 = q.
Правила дифференцирования Правила интегрирования Логарифмы
(u + v)/ = u / + v / (ku)/ = ku/ 1.
dx = x 8. ò
1. alogab = b 2. loga a = 1, a 1, a 0
(uv)/ = u /v + uv /
2.
xndx =
9. ò
3. loga 1 = 0 4. logabc = loga b + logac
(f(kx + m))/ = kf /(kx + m) 3.
= ln | x | 10. ò
5. loga
= logab – loga c
1. C = 0 2. (kx + b)= k 3. (ex)¢ = ex 4.
ax dx =
11. ò
6. loga bp = p logab 7. logab =
4. (xn)¢ = nxn - 1 5. (ax)¢ = ax ln a 5. ò
= tgx 12.
8. loga b =
9.
6. (sin x)¢ = cos x 7. (cos x)¢ = -sin x 6. ò
= -ctgx 13. ò cosx dx = sinx 10. logaxp = ploga | x | p – чет.
8. (tg x)¢ =
9. (ctg x)¢ = -
7. ò ex dx = ex 14. ò sin x dx = -cosx 11. logab = x ax = b
1
0.(ln x)¢ =
11. (logax)¢ =
Свойства степени. ФСУ
12. (
) =
13. (arctg x)¢ =
1. a0 = 1 (a0) 2. a1 = a 3. ar as = ar + s 1. a2 – b2 = (a – b)(a + b)
(arcsin x)¢ =
4. ar : as = ar – s 5. (ar)s = ars 6. ar br = (ab)r 2. (a + b)2 = a2 + 2ab + b2
(arccos x)¢ = -
7.
8. a-r =
9.
3. (a - b)2 = a2 - 2ab + b2
(arcctg x)¢ = -
10. если 0 то 11. если r s, то 4. a3 – b3 = (a – b)( a2 + ab + b2)
Уравнение касательной: ar br при r 0 ar as при a 1 5. a3 + b3 = (a + b)( a2 - ab + b2)
y = f(a) + f /(a)(x – a) ar r при r r s при 0 (a + b)3 = a3 + 3a2 b + 3ab2 + b3
7. (a - b)3 = a3 - 3a2 b + 3ab2 - b3
Свойства корней Арифметическая прогрессии Геометрическая Симметрические системы
1.
2.
1. an = a1 + d(n – 1). 1. bn = b1qn - 1 1. х + у = u, xy = v 2. x2 + у2 = u2 – 2v
3.
4.
2. Sn =
=
2. Sn =
=
3. x3 + y3 = u3 – 3uv 4. x4 + y4 = u4 – 4u2v + 2v2
5.
6.
3. an =
3. bn =
5. x5 + y5 = u5 – 5u3v + 5uv3