our medium is handwriting

pumped with fear and trembling through several layers
of incomprehensible digital superstructure:
my latest linear algebra exam at “google docs”.

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  1. hando:
    [[a b]
    [c d]]^{-1}
    is of course
    (1/\delta)*
    [[d -b]
    [-c a]].

    i found it first; no extra credit on this one.
    (i’ve promised points to whoever spots
    errors by me in published work. this has
    been sitting there in the campus interface
    all night but nobody e-mailed me.
    so i keep my points.)

    other mistakes?




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