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Hung Tat Ho


Last seen: 2년 초과 전 |  2020년부터 활동

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Produce a vector B which contain the average of each column of matrix A
i have a matrix A has a random number of row 1 and 5 and random number of column between 1 and 10. how can i create a vector B w...

3년 초과 전 | 답변 수: 1 | 0

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how to multiply only the second row of matrix with a number
how to multiply only the second row of matrix 2*2 with a random integer and change entry 2*2 to be equal to the entry (1,2)

3년 초과 전 | 답변 수: 1 | 0

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draw two plot in a graph
Hi. i have two columns with too much raws as each column (about 1.300.000 raws) and i want the plot look like as below, it incl...

4년 초과 전 | 답변 수: 1 | 0

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How to draw 2 different plot on a graph
we have two column A and B. so how to draw 2 different plots on a graph?

4년 초과 전 | 답변 수: 1 | 0

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Find the 100 largest numbers in a column
Hello. I have a column about 1.300.300 values, how can i find top 100 largest values in this column?

4년 초과 전 | 답변 수: 0 | 0

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