+1+(-1) = 0 т.к +1 сократиться с -1
10sin 5<span>π/4 cos 7<span>π/4 ctg 3<span>π/4= - 10√2/2 · </span></span></span><span><span><span><span><span><span>√2/2 · (-1 ) = 5</span></span></span></span></span></span>
Минимальное будет при x = 5
y(4) = |5-1|+|5-2|+|5-3|+|5-4|+|5-5|+|5-6|+|5-7|+|5-8|+|5-9| =
= 4 + 3 + 2 + 1 + 0 + 1 + 2 + 3 + 4 = 20
3(5-2z)-4(z+6)=-5(2x+3)
15-6z-4z-24=-10z-15
-10z+10z=-15+9
0*z=-6
z∈∅
Корней нет
Б) =(х-6)^2
В) =(4в-1)^2
Д)= (2у+1)^2