Problem 258. linear least squares fitting
your functions are not all truly 'vectorized'; I would change @(x)1 to @(x)ones(size(x)) for a more consistent 'vectorized' behavior...
Yup, you're right. I made the adjustment...
not meaning to be picky, but in the third test you might want to use aref.' instead of aref' (if x take negative values, which occurs at random for this test, then log(x) takes complex values, and the aref' portion takes the conjugate of the complex valued results); perhaps it is simpler to make sure x takes only positive values...
and nice problem, by the way!
Thanks! Nice catch, I fixed that second issue too (those randomized tests have their drawbacks)
Sorry, but I can not understand the problem to solve.
Can anyone explain to me, please?
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