将黄线刚上穿红线（出现红点）为预警

编写要求：

RSV:=(((C - LLV(L,21))/(HHV(H,21) - LLV(L,21)))*100); 趋势:MA(3*(SMA(RSV,6,1)) - 2*(SMA(SMA(RSV,5,1),5,1)),2),LINETHICK2,COLORYELLOW; A:=(O - LLV(L,89))/(HHV(H,89) - LLV(L,89))*100; VAR2:=3*SMA(A,20,1) - 2*SMA(SMA(A,20,1),15,1)- 100; 背离:(FORCAST(((-1))*(VAR2),21)),LINETHICK2,COLOR9933FF; 钱龙:DRAWTEXT((CROSS(背离,趋势)),背离,'●'),COLOR00FF00; DRAWTEXT((CROSS(趋势,背离)),背离,'●'),COLORRED;

解答：

?RSV:=(((C - LLV(L,21))/(HHV(H,21) - LLV(L,21)))*100);

趋势:=MA(3*(SMA(RSV,6,1)) - 2*(SMA(SMA(RSV,5,1),5,1)),2);