<span>Sin3x+Sin2x+Sinx=0
2Sin2xCosx + Sin2x = 0
Sin2x(2Cosx +1) = 0
Sin2x = 0 или 2Cosx +1 = 0
2x = </span>πn , n ∈Z Cosx = -1/2
<span>x = </span>πn/2, n ∈Z x = +-arcCos(-1/2) + 2πk , k ∈Z
x = +-2π/3 + 2πk , k ∈Z <span>
</span>
-0,7*10000-8*100-26 = -7000-800-26 = -7826
log^2_x(2x)=log_x(2)+log_x(x^3)
X/x+5+5/x+5
1+5+5 дробь х 5/х+5
11+5/х (дробью 5/х)
11х+5
- --------
х
Получается 11х +5/х