Question 6.4.24: What number b in [ 2 b 1 0 ] makes A = QΛQ^T possible? What ...

Introduction to linear Algebra [EXP-672]

What number b in $\begin{bmatrix} 2 & b \\ 1 & 0 \end{bmatrix}$ makes $A = Q\wedge {Q}^{T}$ possible? What number makes $A = S\wedge {S}^{-1}$ impossible? What number makes ${A}^{-1}$ impossible?

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...