Решить уравнение (sinx - 1/2) (cosx +1)= 0
x=<span>π(2n-1)</span><span>≈ 3.1416(20000n-10000</span>
x=2πn+<span>π≈ 62832n+3.1416
</span>x=<span>π(2n+1/6</span>)<span>≈</span>31416(20000n+0.16667)
(a²+3a-2)/(2+a)=(a²+2a+a-2)/(a+2)=(a(a+2)+(a-2))/(a+2)=a+(a-2)/(a+2)=
=a+((a+2)-4)/(a+2)=a+1-4/(a+2).
a+2=1 a₁=-1
a+2=2 a₂=0
a+2=4 a₃=2.
16+14+25+16+21+22=114
114/5=22,8