考虑函数y=sinx,问:
(1)t取何值时,图5-9中阴影部分的面积S1与S2之和S1+S2=S最小?
(2)t取何值时,面积S1+S2=S最大?
A.L1-L2和L2-L3
B.L2-L3和L3-L4
C.L3-L4和L4-L5
D.L4-L5和L5-S1
E.L5-S1和S1-S2
A.-9
B.9
C.-12
A.strcat(s1,s2)
B.strcpy(s1,s2)
C.s1+s2
D.s1&s2
A.byteb1=5;byteb2=6
B.shorts=5
C.shorts1=5;shorts2=6;shorts3=s1+s2
D.shorts1=5;shorts2=6;ints3=s1+s2
A.if(strcmp(s2,s1)==0)ST
B.if(s1-s2==0)ST
C.if(strcpy(s1,s2)==1)ST
D.if(s1==s2)ST
A.122345
B.2.34567892345E11
C.12234
D.2.3456789234E10