A.1
B.2
C.10
D.0
[单选题]Give the logical variables X=Y=1, The value of X V Y( logical addition)is(
[单选题]Give the logical variables X=Y=1,The value of X V Y(logical addition)is (66) .(66) A.8B.6C.4D.1
[单选题]G.ive the logical variables X=Y=1, The value of X V Y( logical addition)is(66).A.8B.6C.4D.1
[单选题]与“y=(x>0?1:x0)y=1; else if(x0)y=1; else if(xO)y=1; else if(x=-0)y=0; else y=-l;D.y=0; if(x>=0) if(x>=0)y=1; else y=-l;
[单选题]与y=(x>0? 1:x0)y=1 else if(x<0)y=£1; else y=O;B.i与y=(x>0? 1:x<0? -1:0);的功能相同的if语句是A.if(x>0)y=1 else if(x<0)y=-1; else y=O;B.if(x) if(x>0)y=1; else if(x<0)y=-1;C.y=-1; if(x) if(x>0)y=1; else if(x==0)y=0; else y=-1;D.y=0; if(x>=0) if(x>0)y=1; else y=-1
[单选题]已知D:x+y≤1,D1:x≥0,y≥0,x+y≤1,,则()。A . I=JB . I=2JC . I=3JD . I=4J
[单选题]若集合M={0,1,2},N={(x,y)x-2y+1≥0且x-2y-1≤0,x,y∈M},则N中元素的个数为()A . 9B . 6C . 4D . 2
[单选题]阅读下述程序段:y=-1;if(x!=0)if(x>0)y=1;elsey=0;该程序段所描述的数学关系是( )。A.B.C.D.
[单选题]下面的程序片段y=-1;if(x!=0)if(x>0)y=1;else y=0;所表示的数学函数关系是_______。A.B.C.D.
[问答题]x2+xey-1=0,求y′,y′′.