Cos(2arctg1)

21●1 |√x²+x–1=√x|

21●а²√17/12(√19) (опр S сечения)

21●π |f(x)=arcos(2x–1).Найдите f(0)|

21●(3;7) |на промеж|

21●1 |sin²α/1+cosα+cosα|

21●2(ех+√х)+С |f(x)=2ex+1/√x|

21●1; 2

21●1;2 у=|cos α/2|+1

21●1/2 f(x)=lnx/2x x=1

21●–1/2 f(x)=x+ln(2x–1)

21●(–1;2) (f(x)=log 2–x/x+1)

21●(–1;0)U(1;∞) | f(x)=√x/x²–1–x |

21●2π |2arccos(–1)|

21●1 |шенбер радиусы|

21●2/9 (y=–x/2+1)

Хdx

21●2x+1² f(x)=ln(2x+1)

21●2tg²α | (sinα+cosα)²–1/ctgα–sinαcosα |

21●(3;+∞) |√x–2>1|

II и III.

21●[2; 3]

21●[0; 1) | √2–√x>1 |

21●[0; 1] |х² ∫ х 1dt≤0

21●–π/2+2πn n*Z

21●–π/2+2πn,кεz

21●(π/3+2πn; 5π/6+2πn),(–π/3+2πn; π/6+2πn),n*Z

| x–y=–π/2 cosx+siny=1 |

21●–π/4+πn n*Z

21●5π/2+2πк,к*z

21●1/x(x2+1)3

21●(x+1)2ex |у=(х²+1)ех|

21●(x²+2x+1)e

21●(x+y)/(x–y) | (x/y–y/x)•(x/y+y/x–2)–1|

21●x²-x+C

21●π/2+πn, n+2πn, n*Z

21●π/2+πn, π+2πn, n*Z |sin²x=cosx+1|

21●0

21●(–1;–1/3) |2х+1|<|x|

21●1. |sin2α,если tgα=1|

21●0. |sin2α, если cosα=1|

21●1. |√х²+х–1=√х|

21●1 |sin²α/1+cosα+cosα|

21●1–cosx |sin²x/1+cosx=?|

21●1. {2–|x–1|

21●–π/2+kπ<2x<π/4+kπ,k*Z или

–π/4+kπ<x<π/8+kπ,k*Z |tg2x<1|

21●20км/ч

21●48,40

21●2/2x+1 f(x)=ln(2x+1)

21●1/√(x²+1)³ |y(x)=x/√x²+1, y(x).|

21●π/8+ πк/2; k*Z

21●π/2+πk; k*Z {cos2x=–1

21●3 |C=(a–b)•(a+b) скаляр произ|

K kEZ

21●5π+2πk |tg(x/2–π)=1|

21●2π

21●2πк<x<π/6+2πк,k*Z; 5π/6+2πк<х<π +2πк,n*Z

|sinx+cos2x>1|

21●I и III |f(x)=2x–1коорд четв леж граф|

Нет решений

21●нет решений { |2х+1|=х

21●–π/3+2πn≤x≤π/3+2πn,n*Z |y=√2cosx–1|

21●2 |2 ∫ 1 dx|

21●a6=7 (6 член прогр)

21●π/4+πk,k*Z (sin2x=1)

21●π/4+kπ | tg(2π–x)=–1 |

21●–π/4+πn≤x≤π/4+πn,n*Z |y=√cos2x/1+sinx|

21●–π/4+πn,n*Z |2sinx+cosx=1|

21●(x+1)²ex y=(x²+1)ex.

21●√x²–1+C

21●(0; 1)

21●(–1)n+1π/6+πn; n*Z |2sinx=–1|

21●(–1)k+1π/6+πk k*Z |2sinx=–1|

21●π/2+πk;k*Z |cos2x=–1|

21●(–1;5) |√х²–х+1=х|

21●–1;1

21●±π/3+2πn,n*Z |2–tgx=cos/1+sinx|

21●320

21●(–∞; 1) (2x<|x|+1)

21●(–∞;–1)U(1; ∞)

21●(–∞;–1)E(1;∞) |y=lg(x²–1)|

21●[0; +∞) | у=√log2(x+1) |

21●[1;+∞) |у=2√х–1|

21●[1/2; 1)U(1;+∞)

21●±π/3+2πn, n*Z

21●1 |√х2+х-1=√х|

21●1 |sin²α/1+cosα+cosα|

21●±π/4+2πn,n*Z |√2cosx=1|

21●1/√(х2+1)3

21●2, 5, 10, 17 |xn=n²+1|

Х-1

21●(–∞; 0] |у=2lnx–ax–1|

21●2π 2 arccos(–1)

21●2πk<x<π/6+2πk,k*Z; 5π/6+2πk<x<π+2πk,k*Z

|sinx+cos2x>1|

21●3, 5, 7, 9, 11 |xn=2n+1|

21●3/2; 4/3;5/4;6/5;7/6; |an=n+2/n+1|

21●D(q)=R E(q)=R

21●g(x)=x–1/2

21●жyп та емес, таk та емес, периодсыз |f=х2+х+1|

21●π/2+πn, π+2πn,n*Z |sin²x=cosx+1|

21●–π/3+2πn≤x≤π/3+2πn,n*Z |y=√2cosx–1|

21●–π/4+πn,nЭZ {2sinx+cosx=1

21●πk≤x≤π/4+πk |cos²x≥1–sinx•cosx|

21●х |х²–х/х–1|

21●х=1

21●{4} |√x–2/√x=1 |

21●х=кπ,кεz

21●x=π/2+πk;π+2kπ,k,k*Z |sin²x=cos x+1|

21●0;-2

21●нет решений {|2х+1|=х

21●(π/3+2πn, 5π/6+2πn);(–π/3+2πn; π/6+2πn),n*Z

21●–8е–2х |f(x)=√2x–1|

21●1/e (y=x²•x–x, x=1)

21●a–b

21●kπ |tgx+cos2x=1|

21●πk,k*Z |(sinx+cosx)²=1+sinx•cosx|

21●x*(–π/2+πn; π/4+πn],n*Z |tg(2π+x)≤1|

21●3 және 5 |f(x)=x²+x+1 1)жұп 2)так 3)жұпта емес тақта емес 4)периодты 5)периодсыз|

Порттан бір мезгілде екі катер шығып, біріЖ:21

210●–1/2 f(x)=x+ln(2x–1)

210●(-1)n+1 π/n+πn,n*Z |√2sinx+1=0|

N

210●(-1)n π/6+πn,n*Z |2sinх–1=0|

210●(2;+∞) |√х²+х–10=х|

210●[–π/3+2πk;π/3+2πk], k*z

210●–π/4+πn/2<x<π/8+πn/2,n*Z |tg2x–1<0|

210●π/6

210●±π/4+2πn.n*z |√2cosx–1=0|

210●(1;2)U(2;+∞)

210●±π/3+2πn n*Z |2cosx–1=0|