阿摩線上測驗 登入

最新科目

最新試卷

最新試題

最新申論題

7. (20%) Find the eigenvalues of the following matrix A and determine a basis for each eigenspace. Use the characteristic polynomials and Gauss elimination to obtain your answers. $$A = \begin{bmatrix} -2 & -6 & -6 \\ -3 & 2 & -2 \\ 3 & 2 & 6 \end{bmatrix}$$

6. (10%) Use Gauss elimination to find the inverse of the following matrix A. First, reduce the matrix to row echelon form, and then continue to reduced row echelon form to obtain the inverse matrix. $$A = \begin{bmatrix} 1 & 2 & 3 \\ 2 & 5 & 6 \\ 3 & 4 & 8 \end{bmatrix}$$

5. (20%) In the following, you should use uppercase letters to denote matrices and lowercase letters with subscripts to denote their entries. For example, if M is a matrix, then $m_{ij}$ denotes its (i,j)-entry. Use lowercase letters with an arrow to denote column vectors of a matrix. For example, $\vec{m}_i$ denotes the i-th column vector of the matrix M. In your proofs, use the following definitions as needed. Definition (Equality of matrices): Matrices A and B are equal if they have the same size and have equal corresponding entries $a_{ij} = b_{ij}$ for all (i,j). Definition (Matrix transpose): The transpose of an $m \times n$ matrix A is the $n \times m$ matrix denoted by $A^T$ whose (i,j)-entry is the (j,i)-entry of A. Definition (Linear combination): A linear combination of vectors $\vec{u}_1, \vec{u}_2, ..., \vec{u}_k$ is a vector of the form $c_1\vec{u}_1 + c_2\vec{u}_2 + \cdots + c_k\vec{u}_k$, where $c_1, c_2, ..., c_k$ are scalars. Definition (Standard vectors): $$\vec{e}_1 = \begin{bmatrix} 1 \\ 0 \\ \vdots \\ 0 \end{bmatrix}, \vec{e}_2 = \begin{bmatrix} 0 \\ 1 \\ \vdots \\ 0 \end{bmatrix}, ..., \vec{e}_n = \begin{bmatrix} 0 \\ 0 \\ \vdots \\ 1 \end{bmatrix}$$ Now let A denote a $m \times n$ matrix. Prove that $(A^T)^T = A$ and $A\vec{e}_i = \vec{a}_i$ for $i = 1, ..., n.

最新課程

最新主題筆記

最新討論

24. 經由下列反應後生成化合物 T,請問化合物 T 之結構為何?(A)(B)(C)(D)(E)

複選題23.有五位學生嘗試分析右詩,其中適當的是:(A)甲生:□的標點符號如果是句號,表示作者認為 大利多風險,少碰為妙 (B)乙生:□的標點符號如果是問號,表示作者想知道 怎樣既獲大利又不涉風險 (C)丙生:本詩將行商比為行船,商人營利謀生如同在鯨鯢齒上行走般艱險 (D)丁生:本詩警告行商艱險難測,提醒世人不貪眼前小利,方能獲取大利 (E)戊生:本詩期許商人應擁有鯨鯢般的雄心壯志,切莫因處境凶險便膽怯

複選題24. 下列關於中國「小說」的流變與發展,敘述適當的是: (A)六朝的志怪小說,形式為短篇文言,以鬼神怪異為題材,如《聊齋誌異》 (B)唐代小說又稱「傳奇」,形式為短篇白話,以史筆立傳,如〈虯髯客傳〉 (C)宋代「話本」是說書人的底本,經過後代文人再創作後,藝術技巧更為成熟,如《水 滸傳》即由話本增潤而成 (D)明清盛行章回小說,每回常以「欲知後事如何,且待下回分解」作結,保留說書人 的敘事痕跡,如《紅樓夢》 (E)晚清由於內政腐敗,外患不斷,小說常對時局有所諷刺批評,如《老殘遊記》

30 對於合法舉行之集會、遊行,以強暴、脅迫或其他非法方法予以妨害者,其處罰種類下列何者不屬之? (A) 2 年以下有期徒刑 (B)拘役 (C)新臺幣 3 萬元以下罰金 (D)新臺幣 15 萬元以下罰鍰

119. 欲拍攝從前景到遠景都清晰的風景照,下列何者為其中要素? (A)小光圈(B)高 ISO (C)高快門速度 (D)長焦距鏡頭 。

122. 依據國際民航組織規定,有關申辦晶片護照相片時照相機及燈光拍攝的要求,下列何者錯誤? (A)鏡頭與被拍攝者的眼睛高度等高 (B)鏡頭距離臉部至少 1.0 公尺以上 (C)使用數位變焦調整影像的大小 (D)使用多個擴散光源佈光,使臉部左右邊的光線勻稱 。