The impulse response H [n] of a linear time invariant system is given as $h[n] = \begin{cases} -2\sqrt 2 & n=1, -1 \\ 4\sqrt 2 & n=2, -2 \\ 0 & otherwise \end{cases}

$ If the input to the above system is the sequence e^j$\pi$n/4, then the output is

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