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sin2x=-√2/2
2x=(-1)^n*arcsin(-√2/2)+πn, n∈C
2x=(-1)^(n+1)*arcsin(√2/2)+πn, n∈C
2x=(-1)^(n+1)*π/4+πn, n∈C
Odpowiedz x=(-1)^(n+1)*π/8+πn/2; n∈C