If $$A = {1 \over 2}\left[ {\matrix{ 1 & {\sqrt 3 } \cr { - \sqrt 3 } & 1 \cr } } \right]$$, then :

Question

$\mathrm{A^{30}-A^{25}=2I}$

$\mathrm{A^{30}+A^{25}-A=I}$

$\mathrm{A^{30}=A^{25}}$

$\mathrm{A^{30}+A^{25}+A=I}$

Please login to view the detailed solution steps...