0,7,26,63,()A.108 B.168 C.169 D.170
0,7,26,63,()A.108 B.168 C.169 D.170
数字推理题:0,7,26,63,( ) A.89 B.108 C.124 D.148
0,7,26,57,( )A.89 B.108 C.100 D.148
已知a,b,c,d 属于(符号)R 且b>0,-c/a < -d/b,则() A.bcad C.a/c >d/b D.a
0,7,26,63()A 89 B 108 C 124 D 1489,1,43,40 ()A 81 B 80 C 121
已知a/b=c/d(b正负d不等于0),求证:(a+c)/(a-c)=(b+d)/(b-d)
已知a+c-7=0,求(a+b)²-2a(b-c)+2b(c-b)+(c-d)²的值
若a/b=c/d=5/7(2b-3d不等于0),则2a-3c/2b-3d等于多少?
已知a>b>0,c>d>0,b分之a=d分之c.是说明①(a+b)/a=(c+d)/c.②(a-b)/b=(c-d)/d
求证(b,c,d)a+(c,a,d)b+(a,b,d)c+(b,a,c)d=0 a,b,c,d皆为向量>
设a,b,c,d为正数,求证(a+c/a+b)+(b+d/b+c)+(c+a/c+d)+(d+b/d+a)≥4
5,5,14,38,87,() A.167 B.168 C.169 D.170