把macd金叉公式改为通达信的选股公式

编写要求：

DIF: =EMA (CLOSE,12) -EMA(CLOSE,26); DEA: =EMA(DIF,9); MACD: =(DIF-DEA) *2; A1: =DIF>=0; A2：=DEA>=0; A3：=DIF<0.3; A4：=DEA<0.3; CROSS(DIF,DEA) AND A1 AND A2 AND A3 AND A4;

解答：

?DIF:=EMA (CLOSE,12) -EMA(CLOSE,26);

DEA:=EMA(DIF,9);