V=пи*r^2*h;
h=V/пи*r^2;
d=1 => r=1/2;
h=пи/пи (1/2)^2;
h=4.
Решение:
(а-1)(а-4)(а+2)=а^3 - 3а^2 -6а+8а
1)3b+5a-7b=5a-4b
2-3q-8p+3q=-8p
3)5x+11-7x=11-2x
4)-8c+4+4=-8c+8
5)2+3a+7a-2=10a
6)-11a-b-12a+3b=-23a+2b
7)5-3b+3b-11=-6
8)5a-3b-2-5a+3b=-2
9)a+a-10-12-a=a-22
10)6x-8-5x-4+9x=10x-12
11)1-9y-22y+4-5=-31y
12)5b-6b-a-a+6b=-2a+5b
Решениеsin(п+t)-cos(3п/2+t)<1<span>-sint - sint < 1
-2*sint < 1
sint < -1/2
-π - arcsin(-1/2) + 2πn < arcsin(- 1/2) + 2πn, n∈Z
- π - π/6 + 2πn < -</span>π/6<span> + 2πn, n∈Z
-7</span>π/6 + 2πn < -π/6 + 2πn, n∈Z<span>
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