【解析】 证明 因为$$ \sigma ^ { n - 1 } \neq \theta \sigma ^ { n } = \theta $$,根据81思考与练习第7题的结 论知,存在向量$$ a \in V $$,使得n个向量a,σ(a),...,$$ \sigma ^ { n } $$(a)线性无 关,但向量空间V是n维的,因此a,σ(a),...,$$ \sigma ...
{ 2 - \mu } { \sigma } ) , $$ 以 $$ \mu $$,$$ \widehat { \sigma } $$ 代μ,σ,得θ的最大似然估计为 $$ \widehat { \theta } = 1 - \Phi ( \frac { 2 - \widehat { \mu } } { \widehat { \sigma } } ) = 1 - \Phi ( \frac { 2 - \overline { X...
Question: Find a 1−α confidence intinul for θ in χ2N(θ,σ2) ineach test befiw, where σ is krown and x=(x1,x2…xn) is aRS. Firstidentify the acceptonce region of to for a Size α test; and the 1−α confidince i...
It is believed that large-N thermal QCD laboratories like strongly coupled QGP (sQGP) require not only a large ‘t Hooft coupling but also a finite gauge coupling (Natsuume, String theory and quark–gluon plasma. arXiv:hep-ph/0701201, 2007). Unlike almost all top–down holographic models...
Double-differential cross sections of the sup 1 sup 0 sup , sup 1 sup 1 B(n, p) sup 1 sup 0 sup , sup 1 sup 1 Be reactions have been measured at 96 MeV in the angular range 0 deg. -30 deg. for excitation energies up to 35 MeV. The spectra have been decomposed into differen...
结果1 题目【题目】设总体X~N( $$ \mu $$, $$ \sigma ^ { 2 } $$),参数空间为$$ \theta = \{ ( \mu , \sigma ^ { 2 } ) : - \infty 0 $$,从中获得样本 $$ X _ { 1 } $$,$$ X _ { 2 } $$,..., $$ X _ { n } $$,下面考虑检验问题$$ H _ { 0 ...
( \sin \theta \cos \varphi , \sin \theta \sin \varphi , \cos \theta ) 是 $$(θ,φ)方向的单位矢.$$\left\{ \begin{matrix} \sigma \cdot n = \left\{ \begin{matrix} \cos \theta \sin \theta e ^ { - i \varphi } \\ \sin \theta e ^ { i \varphi } - \cos...
结果1 题目【题目】计算二重积分1$$ D x y d \sigma $$,其中区域n为曲线$$ r = 1 + \cos \theta ( 0 \leq \theta \leq \pi ) $$与极轴围成. 相关知识点: 试题来源: 解析 【解析】$$ D = \{ ( r , \theta ) | 0 \leq \theta \leq \pi , 0 ...