1,7,32,69,98,A 120 B 121 C 122 D 123
1,7,32,69,98,A 120 B 121 C 122 D 123
公务员行测:1,7,32,69,98,( ) A120 B 121 C 122 D 123
1,2,5,14,41( ) A,121 B,122 C,123 D,144
[a,b)×[c,d
a,b ,c ,d
1、已知实数a,b,c,d满足a+b=7,c+d=5,求(a+c)^2+(b+d)^2的最小值.
A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = (
A+B+C+D=10 A+B=3 B+D=7 A+A=2 C+1=D谁能算出这个题?
一直a>b>c>d,则(1/(a-b)+1/(b-c)+1/(c-d))*(a-d)的最小值
( )-(c-d)=(a-c)-(-b+d)
1/A+1/B=1/7=1/C-1/D 求A+B+C+D等于多少?
定义区间(c,d),[c,d),(c,d],[c,d]的长度均为d-c(d>c).已知实数a>b,则满足1/(x-a)+