Transfer Array into another array
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I have two arrays
n=input
A=randi([0 20],1,n);
B=randi([0 10]',1,n)';
How do I make an array C that has the values of A as the first row and B as the first column, then fill the rest as the product of A*B.
like a multiplication table.
5 个评论
James Tursa
2020-11-12
What have you done so far? What specific problems are you having with your code?
Jethro Perez
2020-11-12
Jethro Perez
2020-11-12
James Tursa
2020-11-12
编辑：James Tursa
2020-11-12
Yes, the solution is simple. Some hints for you:
You can concatenate variables with the [ ] notation. E.g.,
[x,y] concatenates the variables horizontally
[x;y] concatenates the variables vertically
You can transpose a vector from row to column (or vice-versa) with the .' operator, or just ' if you know the variable is real. E.g., if x is a real row vector, then x' will be a real column vector.
You can multiply two variables element-wise with the .* operator. If one of these is a row and the other one is a column, then the result will be a 2D matrix with the element-wise products as the elements.
See if you can experiment and work with the above to come up with the parts you want, and then see if you can use the [ ] notation to put them all together into the final matrix you want. Come back and ask more questions when you have trouble with your progress.
Jethro Perez
2020-11-12
回答（1 个）
Sourabh Kondapaka
2020-11-16
0 个投票
Looks like James Tursa has resolved your query. You can use built-in functions like horzcat and vertcat to achieve the same thing.
I would recommend you to check out the free MATLAB OnRamp Course to get started with the fundamentals of Matlab.
0 个评论
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2020-11-12
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2021-8-20
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