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Let x be the solution set of equation A^...

Let `x` be the solution set of equation `A^x=Idot,w h e r eA+[0 1-1 4-3 4 3-3 4]a n dI` is the corresponding unit matrix and `xsubeN ,` then the minimum value of `sum(cos^xtheta+sin^xtheta),theta in Rdot`

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