I suggest to close math.stackexchange.com/q/5008344/42969 as a duplicate. I have provided two links to identical questions, and both have more questions linked to it, so this has been asked and answered multiple times.
How do I get people to upvote my questions? I'm currently question banned and I really need to ask some questions. I currently have 0 upvoted questions and a few down voted ones.
@MartinR the duplicate candidate you refer to is about the proving a given identity, this question is about the identity itself and how its "impossible to hold". I'm closing it, but for lack of context instead
The Problem:
I need only the bottom left element of a product of matrices $(\bf{M_1}+\bf{I})(\bf{M_2}+\bf{I})\cdots(\bf{M_N}+\bf{I})$,
where $\bf{I}=\begin{pmatrix}
1 & 0\\
0 & 1\end{pmatrix}$, and $\require{cancel}
\bf{M_i}=
\begin{cases}
\begin{pmatrix}
0 & x_i\\
0 & 0\end{pmatrix} &i\equiv N\p...
