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【单选题】
在同一个坐标系下绘制y1=x*x-4x+1和y2=3*x+1的散点图，用红色的“+”绘制y1=x*x-4x+1 的散点图，不；用蓝色圆点并绘制y2=3x+1的图，只需绘制0≤x≤4区域内图形。【图片】可以实现的代码如下______。A.
DATA lines; DO X=0 TO 4 by 0.2; Y1=x*x-4*x+1; Y2=3*x+1; END; SYMBOL1 V=PLUS C=blue SYMBOL2 i=j V=dot C=red PROC GPLOT data=lines; PLOT Y1*X=1 Y2*x=2/overlay ; RUN;
B.
DATA lines; DO X=0 TO 4 by 0.2; Y1=x*x-4*x+1; Y2=3*x+1;OUTPUT; END; SYMBOL1 V=PLUS C=blue; SYMBOL2 i=j V=dot C=red; PROC GPLOT data=lines; PLOT Y1*X=1 Y2*x=2/overlay ; RUN;
C.
DATA lines; DO X=0 TO 4 by 0.2; Y1=x*x-4*x+1; Y2=3*x+1; END; SYMBOL1 V=PLUS C=RED; SYMBOL2 i=j V=dot C=BLUE; PROC GPLOT data=lines; PLOT Y1*X=1 Y2*x=2; RUN;
D.
DATA lines; DO X=0 TO 4 by 0.2; Y1=x*x-4*x+1; Y2=3*x+1;OUTPUT; END; SYMBOL1 V=PLUS C=RED; SYMBOL2 i=j V=dot C=BLUE; PROC GPLOT data=lines; PLOT Y1*X=1 Y2*x=2/overlay ; RUN;
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举一反三
【判断题】Differences in time preferences have the potential to create value in a negotiation.
A.
正确
B.
错误
【判断题】Because of differences in value system, as listeners, we often reject conflicting ideas and retain our original point of view.
A.
正确
B.
错误
【简答题】After studying all the books about China, the author was fully prepared. 2. It feels absolutely good when the author gets back to her homeland. 3. It's a contradiction to name the third stage "rejecti...
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