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Question Number 173164 by SANOGO last updated on 07/Jul/22

Answered by CElcedricjunior last updated on 08/Jul/22

$$\mathbf{det}\left(\mathbf{M}\right)=0-\mathbf{a}(1+{\mathbf{a}}^2)+{\mathbf{a}}^2(\mathbf{a}+{\mathbf{a}}^3)$$$$=\mathbf{a}({\mathbf{a}}^4-1)$$$$\mathbf{for}\mathbf{M}\mathbf{inversible}\mathbf{if}$$$$\text{You can't use 'macro parameter character \#' in math mode}$$$$\mathbf{for}\mathbf{a}\in \mathbb{R}\mathrm{\setminus }\{0;1\}\mathbf{Matrix}\mathbf{M}{\mathbf{it}}^{\prime }\mathbf{s}\mathbf{inversible}$$$$$$$$$$$$......thecelebrecedricjunior.......$$

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