Hw5 ex1 - norm minimization

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Q How do we solve the minimization problem for \sqrt{ || \dot{x} ||}?

A The minimization of the square root of the norm is difficult, but it's doable by just taking the derivative of the \sqrt{\cdot} function; though one will have the same result by minimizing just || \dot{x} || , where with this notation we mean \dot{x}^T \dot{x} . 

Note that in the literature,  |  | x |  |  is generally already defined as \sqrt{ x^T x }.



--Elisa

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