Www.mccme.ru
???????? 154?3 ?????????????????????????1?0?-????????????????????????????????????????2?7????????? 2011 ?.
1. ???????? ????????? ? ???????????
?) 5 sin2 x + 4 sin
+x
2
= 4;
?) cos 2x = 11 sin x - 5;
?) 4 cos4 3x + 8 = 11 sin2 3x;
?) cos 4x = 6 cos2 x - 5; ?) 4 sin2 2x + 3 = 4 cos2 x; ?) 6 sin x - sin x cos x = 6(1 + cos x).
2. ?????????? ?????????
?) 1 + 7 cos2 x = 3 sin 2x; ?) 2 sin2 2x + 3 cos 4x - 4 = 5 sin 4x.
3. ?????????? ?? ?????????
?) sin2 x + sin 2x = 1; ?) cos 3x = 1 + cos 6x;
?) cos
2 - x
34
= 5 sin
x-
23
;
?) 2 cos x + cos 2x + 1 = 2 cos2 x + cos2 3x .
2
2
4. ????????? cos 2x, sin2 x, cos2 x, 1 ? sin 2x ??? ????????????
?) cos x - sin x = 1 - sin 2x;
sin3 x - cos3 x
?)
2
2
= 1 cos x;
2 + sin x
3
?) 4 sin2 x cos x - 1 = cos x.
5. ????? (????????) ?????? ????????
?) sin4 x - cos4 x = 1 ;
?) cos6 x - sin6 x = 2 cos2 2x;
2
?) sin4 x + cos4 x = sin x cos x;
?)
sin8 x
- cos8 x
=
1 2
cos2 2x
-
1 2
cos 2x.
6. ????? (????????) ????????? (???????????)
?) 3 + 2 sin 2x = tg x + ctg x;
?) tg2 x - 3 tg x + 4 = 3 ctg x - ctg2 x;
3
?) tg 2 - x + tg - x = 2 sin 2x; ?) ctg x - tg x = cos x - sin x .
3
3
???????? ???????
0, 5 sin 2x
7. ?????? ?????????:
?) cos 2x + sin2 x = cos x + 2;
?) cos 2x + 20 cos2 x + 3 sin x - 3
2
2
?) 0, 5 cos 4x = sin x cos x;
?)
sin4
x 2
+
5
cos
x
+
4
=
0;
= 3;
?) 7 + sin 2x = 7 sin x + 7 cos x;
?) sin 2x = 2 sin x;
?) (1 - cos 6x) cos 2x = sin2 3x;
?) cos2
+x
4
= cos2
-x
4
+ 5 cos x.
8. ?????? ?????????:
?)
sin
2x
sin
x
-
0,
5
sin
x
-
sin
2x
=
-
1 2
;
9. ?????? ?????????:
?) 2 sin5 x - sin3 x + 3 cos 2x = 0.
?) cos 2x = sin3 x + cos3 x;
?) sin 2x + cos 2x + sin x + cos x + 1 = 0; ?) sin4 x + cos4 x = cos2 2x + 0, 25;
?) 1 + ctg2
3 + x
2
= cos4 x - sin4 x;
?) sin6 x - cos6 x = 2(sin4 x + cos4 x) - 1;
?)
cos6 x
+
sin6 x
=
15 8
cos 2x
-
1 2
.
10. ?????? ?????????:
?) 2 sin 4x - 3 sin2 2x = 1;
?) 6 sin2 x - + 0, 5 sin x - = 2 + cos2
26
3
?) 2 sin4 2x - 3 + 5 sin 4x = 2 cos4 2x;
-x
62
;
?) tg
+x
+ tg
-x
=
4
;
3
6
3
?) tg x + ctg x = 2 cos-1 4x;
?)
cos x ctg2 x - tg2 x
=
1 8
1
-
1
2 ctg x + ctg2 x
.
2
2
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- Московский государственный университет Механико
- truy cập để tải tài liệu học tập bài giảng
- tÌm giÁ trỊ lỚn nhẤt nhỎ nhẤt
- calculus brief intro to trig derivatives
- cos x cos x cos x x cos x x
- phÖÔng trÌnh lÖÔÏng giaÙc
- part i college mudah
- funkcjetrynometrycznekątadowolnego
- applied calculus i practice problems for quiz 5
- t kea home