MathematicsEasy244×since 2002Q4488If A = \left[ {\matrix{ a & b \cr b & a \cr } } \right] and {A^2} = \left[ {\matrix{ \alpha & \beta \cr \beta & \alpha \cr } } \right], thenAα=2ab, β=a2+b2\alpha = 2ab,\,\beta = {a^2} + {b^2}α=2ab,β=a2+b2Bα=a2+b2, β=ab\alpha = {a^2} + {b^2},\,\beta = abα=a2+b2,β=abCα=a2+b2, β=2ab\alpha = {a^2} + {b^2},\,\beta = 2abα=a2+b2,β=2abDα=a2+b2, β=a2−b2\alpha = {a^2} + {b^2},\,\beta = {a^2} - {b^2}α=a2+b2,β=a2−b2Check answerSkip