[ I/T ] existing participle setting ? plus the list of all authentic numbers hold the similar cardinality, a bijection remaining furnished by the operate ? x ? tan ? ( ? x / 2 ) displaystyle xmapsto tan(pi x/two) Nên tham kh?o các m?u v?n kh?n truy?n th?ng ho?c nh? s? t? v?n c?a ng??i có kinh nghi?m ?? ??m b?o ?úng nghi th?c.wager brett persona