Demo automatically generate latex for matrix/vector calculation

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Question 1

Let $A=\var{A}$ , $u=\var{u}$ . $m=\var{m}$ and $n=\var{n}$ give the variable size of $A$ .

To demonstrate matrix times vector:

$\var{A}\var{u}=\var{unresolvedAu}=\var{A*u}$

(Note: I prefer $\cdot$ to $\times$ for multiplication, and didn't need any other simplification rules than brackets, so I did it this way rather than use the inbuilt simplify function.)

For a general vector:

$\var{A}\var{latexx} = \var{latexAx}$

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A general matrix of random size: $\var{generalA}$

With some unresolved calculations: $\var{latexA1}$

And the same thing resolved: $\var{A1}$ .

You can see more complex things in the question called "Find matrix from entry formula ( WBQ 1.23 randomized size and formula)", which is in Chapter 1 Vectors and Matrices in Linear Algebra Y1.