Y=2
x=2
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<span>0.5(8х-3)= -4(2.5-х)
4х-1,5=-10+4х
х</span>∈∅
Прямые параллельны.
___________________
<span>1.2(5-4х)= -6(0.8х+1)
6-4,8х=-,4,8х-6
</span>х∈∅
Прямые параллельны.
С(36)2=36!/34!*2!=(35*36/2)=35*18=
=630
F`(x)=(2√x+1)`*x²+(x²)`*(2√x+1)=2/2√x*x²+2x*(2√x+1)=x√x+4x√x+2x=
=5x√x+2x
SinX=1` X= π + 2πk
2cos2X +2sinX+2=0 2(1-2sin^X)-2sinX+2=0 2-4sin^X-2sinX+2=0 4sin^X+2sinX=0 2sinX(2sinX+1)=0 sinX=0 X= πk sinX= -1/2 X= (-1)^(k+1) *π/6 +πk