If A - - - 0- 0 - B - - - - 1- 0- 0 - be two matrices- then ABT is zero matrix for - - -

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Multiplication of Matrices

If A = [ α;...

Question

If $A = ⎛ ⎜ ⎝ \begin{matrix} α 00 \end{matrix} ⎞ ⎟ ⎠ & B = ⎛ ⎜ ⎝ \begin{matrix} α + 1 00 \end{matrix} ⎞ ⎟ ⎠$ be two matrices, then $A B^{T}$ is zero matrix for $| α | =$

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