Originally Posted by
watchmath In my opinion people won't response your question. The main reason is that it is messy to right matrix in latex.
That is a possibility...but there is a neat way of creating matrices without using
Code:
\left[\begin{array}{cccc} [insert matrix here] \end{array}\right]
You can use
Code:
\begin{bmatrix} [insert matrix entries here] \end{bmatrix}
This saves me a lot of time.
For example, instead of using
Code:
\left[\begin{array}{cccc} 1&0&0&0\\0&1&0&0\\0&0&1&0\\0&0&0&1 \end{array}\right]
to generate , you can use
Code:
\begin{bmatrix}1&0&0&0\\0&1&0&0\\0&0&1&0\\0&0&0&1 \end{bmatrix
to generate
The second one elimination problem is kind of routine so no body has no interest to answer.
It may be this, or just that using eliminations on this will lead to ugly looking fraction elements!!! [as seen in my response to part a)]
--Chris