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「平學（43）：Matlab 入門學習之矩陣運算」
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Dear you,
this is LearningYard Academy.
Today, the editor brings you an article
"Ping Xue(43):Matlab introductory study of matrix operations（2） "
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一、思維導圖（ Mind mapping ）
二、學習過程（ Learning process ）
1. 構建矩陣（ Build a matrix ）
在構建矩陣的過程中，需要用到英文字元的中括弧「[ ]」和分號「;」，兩個數之間插入空格代表同一行，插入分號代表進入下一列。小編在此處構建了一個矩陣，具體如下圖所示：
In the process of constructing the matrix, you need to use the English characters in brackets 「[ ]」 and semicolon 「;」, insert a space between the two numbers on behalf of the same line, insert a semicolon on behalf of the next column. I have constructed a matrice here, as shown below:
2. max 函式（ max function ）
該函式用於列舉矩陣每列最大值，具體效果如下圖所示：
The function is used to list the maximum value of each column of the matrix, the specific effect is shown below:
3. sum 函式(sum function )
該函式用於計算矩陣每列和，具體效果如下圖所示：
The function is used to calculate the matrix sum of each column, the specific effect is shown below:
4. mean 函式(mean function )
該函式用於列舉矩陣每列均值，具體效果如下圖所示：
The function is used to enumerate the mean value of each column of the matrix, the specific effect is shown below:
5. sort 函式(sort function )
該函式用於對每列數值進行排序，具體效果如下圖所示：
The function is used to sort the values in each column, the specific effect is shown below:
6. sortrows 函式(sortrows function )
該函式用於依照第一列的數從小到大排序行，具體效果如下圖所示：
The function is used in accordance with the first column of the number of small to large sorting line, the specific effect is shown in the figure below:
7. length 函式(length function )
length 函式用於顯示矩陣最大維度的長，具體效果如下圖所示：
length function is used to display the maximum dimension of the matrix length, the specific effect is shown below:
8. eye 函式(eye function )
該函式用於生成單位矩陣，具體效果如下圖所示：
This function is used to generate the unit matrix, the specific effect is shown below:
9. zeros 函式(zero function )
該函式用於生成a行b列的零矩陣，具體效果如下圖所示：
The function is used to generate a row b column zero matrix, the specific effect is shown below:
10. ones 函式(ones function )
該函式用於生成a行b列的單位矩陣，具體效果如下圖所示：
The function is used to generate a row b column unit matrix, the specific effect is shown below:
11. diag 函式(diag function )
該函式用於指定對角線上的函式，具體效果如下圖所示：
This function is used to specify the function on the diagonal, the specific effect is shown below:
12. 讀取特定位置的元素(Retrieve the element at a specific location )
可透過直接存取矩陣行列來讀取特定值，具體效果如下圖所示：
Specific values can be read by directly accessing the matrix rows and columns as shown below:
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參考資料：Google 轉譯，百度，通義千問
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文字 | Ping
排版 | Ping
稽核 | yyz
