Hi:(adsbygoogle = window.adsbygoogle || []).push({});

I have a problem about the matrix,

i try the following tex commands:

##A=\begin{ bmatrix } 1 & 2 \\ 3 & 6 \end{ bmatrix }##

and it can not show the matrix, I don't know what is the problem, since the

code style seems right. And another problem is I try to use Daum Equation Editor

to edit the math equation, but the problem is if I add $ and $ surround the code

paste from Daum Equation Editor, it can not show the result I want.

it will show the original codes without any compile. Is any possible solution for that,

thanks a lot.

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# About the presentation of matrix

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