221●2tgõ–2√x+C | ó=2/cos²x–1/√x |
221●2/(2x+1)•ln2
221●2õ²–2õ/(2õ–1)² {f(x)=x²/2x–1. f(x)
221●(-1)ⁿ+π/6+π,n*Z; –π/4+πk,k*Z
221●–sin2a {tg2a(sin2a-1)
221●–2sin α. |2sinα–sin2α/cosα–1|
221●(–∞;–√2]U(–1;√2] {y=√2–x²/x+1
221●(–∞;∞) |ó=√2õ²–õ+1|