(1)2,13,40,61,( ).A.46.75 B.82 C.88.25 D.121
2,13,40,61,( ) A.46.75 B.82 C.88.25 D.121 1,8,60,32,20,( ) A
数字推理:2,13,40,61,( )A 46.75 B 82 C 88.25 D 121
行政能力测试数字题2,13,40,61,()A 46.75 B 82 C 88.25 D 121还有一个22,36,40
A B C D × 9 ___________________ D C B A (1) A = ( )(2) B = (
a,b,c,d>0 证(a/(b+2c+3d))+(b/(c+2d+3a))+(c/d+2a+3b))+(d/(a+2b
[a,b)×[c,d
a,b ,c ,d
已知a/b=c/d,求证a+2b/b=c+2d/d
4元1次方程求速解1:A+B+C=134B+C+D=131A-B-C=D=1A+B+C+D=?2:2A+B-5C+D=8
求行列式 |a+b+c+2d a b c,d b+c+d+2a b c,d a a+c+d+2b c,d a b a+b
行列式的计算 1 1 1 1 a b c d a^2 b^2 c^2 d^2 a^4 b^4 c^4 d^4
已知a,b,c,d属于R+,且a+b+c+d=1,求证a^2+b^2+c^2+d^2>=1/4