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how the FUCK did he get to trace?
/sqt/: Stupid Questions Thread
Nathan Evans
Ryder Gray
If I'm doing an exam in quantum mechanics, will the answers to previous problems change when I answer the final problem?
Joseph Campbell
Depends on whether you check your work or not.
William Edwards
[math]w_k^TS_tw_k = tr(w_k^TS_tw_k) = tr(w_kw_k^TS_t)[/math]
then bring the sum back into the trace and define [math]WW^T = \sum_{k=1}^d w_kw_k^T[/math]
Hudson Allen
Yeah I'm dumb I didn't realise [math]W^T_kS_tw_k[/math] leads to trace. thanks user
Sebastian James
Anyone knows how the second term came to be? If I open the brackets, yeah I get [math]X^TX[/math], but how did they get to [math]W^TXX^TW[/math]?
Nicholas Lee
How do I revise lads. Got my notes I made, the teachers notes, practice questions in front of me atm I'm reading my and their notes and ever so often spewing it back to myself feels passive AF.
Kayden Parker
(x^(1/2) - 4)/(x - 16)
This problem looks so simple but I have no idea how to simplify this expression. Help?
Jason Davis
Wolfram can't figure out this shit.
{1, 30, -2, 71, 1, 1, -132, 490, 23}
Could you using interpolation?
My retardation precedes me.
Aiden Price
Don't you think that root(x)-4 and x -16 look awfully similar?
The solution is (1/(root(x)+4))