If it is known that A is a 3×5 matrix, after executing A(:,1:2:3)=[], ( ).
A: A becomes row vector
B: A becomes 3 rows and 3 columns
C: A becomes 3 rows and 2 columns
D: A becomes 2 rows and 3 columns
A: A becomes row vector
B: A becomes 3 rows and 3 columns
C: A becomes 3 rows and 2 columns
D: A becomes 2 rows and 3 columns
举一反三
- If a is known to be a 2×3 matrix, then after executing a=a(:), ( ). A: a transforms to a column vector B: a transforms to 3 rows and 2 columns C: a transforms to 3 rows and 3 columns D: a transforms to 2 rows 3 and columns
- How many rows of piles are generally set up in freestyle skating competition? How many piles per row? A: row 5 and 25 B: rows 2 and 18 C: rows 1 and 30 D: rows 3 and 20
- Which of the following are the types of columns encountered in gas chromatography?(1) flat plates (2) packed columns (3) plastic strips (4) open tubular, or capillary columns A: 1,2 B: 3, 4 C: 1, 3 D: 2,4
- depend on following three-player game, where player 1 chooses rows, player 2 columns and player 3 matrices What’s Nash equilibrium of this game?https://image.zhihuishu.com/zhs/onlineexam/ueditor/201912/986ba5e2a3164a73ae00db6d03e3e868.png
- 假设数据集中“数量”是第5个字段,下面()能得到第3条记录的数量。 A: Ds.Tables[0].Rows[3][4].ToString B: Ds.Tables[0].Rows[2][4].ToString C: Ds.Tables[0].Rows[2][5].ToString D: Ds.Tables[0].Rows[3][5].ToString