deletions | additions       diff --git a/Koeffizientenmatrix_text_ref_left_cal__.md b/Koeffizientenmatrix_text_ref_left_cal__.md  index 51b3254..42aad4a 100644  --- a/Koeffizientenmatrix_text_ref_left_cal__.md  +++ b/Koeffizientenmatrix_text_ref_left_cal__.md 
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**Koeffizientenmatrix**   $\text{ref}\left({\cal{A}}\right)=\begin{pmatrix} $$\text{ref}\left({\cal{A}}\right)=\begin{pmatrix}  1 & a'_{1,2} & a'_{1,3} & \dots & a'_{1,n} & b'_1\\  0 & 1 & a'_{2,3} & \dots & a'_{2,n} & b'_2\\  0 & 0 & 1 & \dots & a'_{3,n} & b'_3\\  \vdots & \vdots & \vdots & \ddots & \vdots & \vdots \\  0 & 0 & 0 & \dots & 1 & b'_n  \end{pmatrix}$ \end{pmatrix}$$