明日涨停选股公式答:必卖价:IF(均价/REF(均价,1)>1,次日卖出点105,次日卖出点)COLORD9D919 NODRAW;} {AC:=REF(C,1); 涨停K线:=IF((C-AC)100/AC>=(10-001100/AC),1,0); 跌停K线:=IF((AC-C)100/AC>=(10-001100/AC),1,0); STICKLINE(涨停K线,OPEN,CLOSE,25,0),COLORYELLOW; STICKLINE(跌停K线,OPEN,CLOSE...
...左侧的抛物线上有三点A,B,C,它们的横坐标依次相差1,连接AB,AC...答:抛物线Y=-X2-2X+3 配方得y=-(x+1)²+4,对称轴为x=-1 设A,B,C的横坐标依次为a,a+1,a+2 a+2<-1 ∴A(a,4-(a+1)²),B(a+1,4-(a+2)²),C(a+2,4-(a+3)²)三角形ABC的面积 S=SΔAEC-SΔADB-S梯形BDEC =1/2*2*EC-1/2*BD-1/2*(BD+...