Jika matriks A (2 -5) maka invers (-2 6) dari matriks A adalah

Matrik A = [tex] \left[\begin{array}{ccc}2&-5\\-2&6\\\end{array}\right] [/tex]

A⁻¹ = [tex] \frac{1}{(2x6) - (-2x-5)} \left[\begin{array}{ccc}6&5\\2&2\\\end{array}\right] [/tex]

A⁻¹ = [tex] \frac{1}{(12 - 10)} \left[\begin{array}{ccc}6&5\\2&2\\\end{array}\right] [/tex]

A⁻¹ = [tex] \frac{1}{2} \left[\begin{array}{ccc}6&5\\2&2\\\end{array}\right] [/tex]

A⁻¹ = [tex] \left[\begin{array}{ccc}3&5/2\\1&1\\\end{array}\right] [/tex]