Ответ:
¡!!!!!!!!!!! ¡!!!!!!!!!!!
6x²+5x-4=6(x+4/3)(x-1/2)=(3x+4)(2x-1)
D=25+96=121
x1=(-5-11)/12=-16/12=-4/3
x2=(-5+11)/12=6/12=1/2
p - пи
э - принадлежит
\э\ - не принадлежит
sin x - cos x - sin x * cos x = 1
sin x (1 - cos x - cos x) = 1
sin x = 1
x = p/2<span> +2p n, n э Z</span>
<span>n = 0</span>
<span> x = <span>p/2 , э [ -p ;p ];</span></span>
<span><span>n = 1</span></span>
<span><span>x = p/2 + 2p </span></span>, \э\ [-p ;p ];
n = 2
x = p/2 + 4p, \э\ [-p;p];
n = -1
x = p/2 - 2p, \э\ [-p;p];
n = -2
x = p/2 - 4p, \э\ [-p;p];
Ответ: x = p/2+2p n, n э Z; x = p/2;
(х-х+у/х-у+у):(1-2у+1/х^2-у^2)= (y/x)/(-2y)/x^2-y^2)=(y/x)*(x^2-y^2)/(-2y)=-(x^2-y^2)/2x=(y^2-x^2)/2x