Comments by "Fhf Fhf" (@fhffhff) on "Навальный LIVE"
channel.
-
1
-
1
-
(x-3)(log(6)(x²+3x-4)+log0,2(20-5x)+1/log(4-x)5+x+1)≥x²-x-6,{x²+3x-4>0,20-5x>0, 4-x>0,4-x≠1;{(x+4)(x-1)>0-4+°-°+1>x,x<4, x≠3;{хє(-∞;-4)U(1;+∞),хє(-∞;3)U(3;4);хє (-∞;-4)U(1;3)U(3;4).(x-3)(log(6)(x²+3x-4) +x)-(x-3)(x+2)≥0,(x-3)(log(6)(x²+3x-4)+x- x-2)≥0,(x-3)(log(6)(x²+3x-4)-2)≥0,log(6)(x²+3x-4)-2=0,x²+3x+4=36,x²+3x-32=0,x=(-3±√(9-4*32))/2[x=-1,5+√137/2,x=-1,5 √137/2;--1,5-√137/2+*3--1,5+√137/2+>x хє[-1,5-√137/2;3]U[-1,5+√137/2;+∞) хє[-1,5-√137/2;-4)U(1;3).
1
-
1
-
а, 37,5° atg37,5° 2atg37,5°/sin75° (2atg37,5°/sin75°-a)sin75°*(2(a-2atg37,5 °*ctg75°)+a(2tg37,5°/sin75°-1)cos75°)/2-arcsin((1-2tg37,5°ctg75°+2tg37,5°*ctg75°-cos75°)/(tg37,5°))a²tg²37,5°+a(1-cos75°)*√(a²tg²75°-(a-acos75°)²)/2=a²((2tg37,5°/(√2/4+√6/4)-1)(0,5*√2/2+√3/2*√2/2)*(2-4tg37,5 °*(√6/4-√2/4)/(√2/4+√6/4)+(2tg37,5°/(√2/4+√6/4)-1)(√6/4-1/4*√2)/2-5/12*πtg²37,5°+(1-√3/2*√2/2+1/2*√2/2)*√((1-cos150°)/2/(1+cos150°)*2-(1-√6/4+√2/4)²)/2)=a²((8√(15-8√3-6√6+10√2)(√6/4-√2/4)-1)(√2/4+√6/4)*(2-√(15-8√3-6√6+10√2)*(8-2√12)+(2√(15-8√3-6√6+10√2)(√6-√2)-1)(√6/8-√2/8)-5/12*π(15-8√3-6√6+10√2)+(0,5-√6/8+√2/8)*√(6,25+4,125√3+√6/4-√2/4))*(1+²)+a²...(1+²)
1
-
1
-
1
-
1
-
1
-
log(x+8)(x²-3x-4)≤2log(x-4)²|x-4| {x+8>0,x +8≠1,x²-3x-4>0,(x-4)²>0,(x-4)²≠1;{x>-8,x≠ 7,(x-4)(x+1)>0-1+°-°4+>x,x≠4,x≠-3,x≠-5;{xє(-8;-7)U (-7;-5)U(-5;-3)U(-3;4)U(4;+∞), хє(-∞;-1)U(4;+∞);хє(-8;-7)U(-7;-5)U(-5;-3)U(-3;-1)U(4;+∞).log(x+8)(x²-3x-4)≤1,[{x+8>1,x²-3x-4≤x+8;{x+8є(0;1),х²-3х-4≥х +8;[{х>-7,х²-4х-12≤0;{хє(-8;-7),х²-4х-12≥0;[{х>-7,(х-(4+√(16-4*4*-12))/2)(х-(2-√(4 +48)))≤0;+*+>х{хє(-8;-7),(х-2-√52)(х-2+√52)≥0; +-*+>х[{х>-7,хє[2-√52;2 +√52];{хє(-8;-7),хє(-∞;2-√52]U[2+√52;+ ∞);[хє[2-√52;2+√52],хє(-8;-7);хє(-8;-7)U [2-√52;2+√52],хє(-8;-7)U[2-√52;-5)U(-5;-3)U(-3;4)U(4;2+√52]
1
-
sgn(x²-4x+1)=1-2x,[{x²-4x+1>0,1=1-2x;{x²-4x+1=0,0=1-2x;{x²-4x+1<0,-1=1-2x;[{1>0,x=0;{0,25-4*0,5+1=0,25-2+1=-0,75, x=0,5;{-2<0,x=1;
1
-
1