230●–∞<n≤–12,0≤n<∞ |x²+nx–3n=0|
230●(–∞; 0) U (1; ∞) |õ² ∫ õ 3dt>0|
230●±5π/6+2πn, n*Z |2cosx+√3=0|
230●πn,n*Z ±5π/6+2πk,k*Z |sin2x+√3 sinx=0|
230●íåò ðåøåíèé |2cosx+3=0|
230●íåò êîðíåé |√õ–2+3=0|
230●π/3n, n*Z |2tg3x=0.|
230●5π/3+6πê ê*Z
230●[π/6+2πn; 11π/6+2πn],n*Z |2cosx –√3≤0|
230●(0; 5π/12) |ctg2x>–√3 xE(0; π)|