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Exercise 2

Avg difficulty 3.0

Use Corollary 4.11 to decide if each matrix has an inverse.

  • (a)  (21−11)\begin{pmatrix}2&1\\ -1&1\end{pmatrix}     (b)  (041−3)\begin{pmatrix}0&4\\ 1&-3\end{pmatrix}     (c)  (2−3−46)\begin{pmatrix}2&-3\\ -4&6\end{pmatrix}

Hefferon, Linear Algebra, Maps Between Spaces, Inverses, Exercise 2

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Adapted from Linear Algebra © 2016 Jim Hefferon. Licensed under CC BY-SA 3.0 US. Source: Linear Algebra. Imported at revision df2262e.