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જો $A = \left[\begin{matrix}a & b \\b & a \\ \end{matrix}\right]$ અને $A^2 = \left [\begin {matrix}\alpha & \beta \\\beta & \alpha \\ \end{matrix}\right]$ તો

• A
  $\alpha = 2ab, \beta = a^2 +b^2$
• B
  $\alpha = a^2 +b^2, \beta =ab$
• ✓
  $\alpha = a^2 +b^2, \beta =2ab$
• D
  $\alpha = a^2 +b^2, \beta =a^2 - b^2$