设二次型
过正交变换化为标准形
.
求正交变换矩阵;
参考答案:
当λ1=λ2=2时,由(2E-A)X=0,得[*] [*]
With your help, there is no doubt ______ our plan is meant for will work out successfully. [ ]
A. that what
B. whether that
C. what that
D. that which
扩张型心肌病病理及血流动力学改变不包括()。
A.进行性加重的充血性心力衰竭和各种心律失常
B.左心室射血分数(EF.重度减低
C.心肌收缩无力,心排量减少,心贮血量增多
D.室壁变薄且运动普遍减低
E.两侧心室扩大,通常以右心扩大为主