向量组=(1,a,c), beta =(c,1,b) ==(1,a,c), beta =(c,1,b) =，满足=(1,a,c), beta =(c,1,b) =成立，则=(1,a,c), beta =(c,1,b) =的值为（ ）.=(1,a,c), beta =(c,1,b) ==(1,a,c), beta =(c,1,b) ==(1,a,c), beta =(c,1,b) ==(1,a,c), beta =(c,1,b) =

,n, 则 ((y)_(1))=-|||-A.β0 B.β1x C. beta in (beta )_(1)(x)_(1) D. (beta )_(9)+(be

1 设 -|||-A、 α,β.-|||-B、 α,β,y:-|||-C、 alpha +beta ;-|||-D、 alpha -beta ;

向量 beta =(-1,,-|||--1,0) 可表示为α1,α2,α3的线性组合: beta =a({a)_(1)}+b(a)_(2)+(c)_(3), 则

alpha =(1,a,0), beta =(-1,2,b), 欲使 alpha +beta =0, 则 ()-|||-A、 =2, b=0 B、 a=-2 b

(α>0,β>0).若f`(x)在 x=0 处连续,则-|||-(A) alpha -beta gt 1. (B) lt alpha -beta leqslan

8.若向量组α1,α2,α3线性无关, (beta )_(1)=(alpha )_(1)-(alpha )_(2), (beta )_(2)=(alpha )_

[单选题]毛果芸香碱可作用于A．α1受体B．α2受体C．β1受体D．β2受体E．M受体

[单选题]若向量a=（1，1），b=（-1,1），c=（4，2），则c=A． 3a+b B. 3a-b C.-a+3b D. a+3b

设向量0 1 2-|||-(alpha )_(1)= 1 _(2)= 1 ,beta = 1-|||--1 1 3，则0 1 2-|||-(alpha )_(1

[单选题]若（a，c）=1，（b，c）=1则（ab，c）=（）。A . 1.0B . aC . bD . c