Asked at Man AHL
Theory: Quant Python That Survives ReviewRead the problem, hints and solution here. The editor needs a bigger screen: open this page on a laptop to write and run your code.
xxx xxxxxxxxxxxxxxx xxxxxxxx xx xxx xxxxx xxxxx x xxxxxxxxxx xxxxxxxx xx xxx xxx xxxxxx: xx xx xxx xxxxxxxx, xxxx xxxxxxxxx xxx xxxxxxxxxx xxxxxxxxxx xxx xxxx xx xx xxxxxxx. xxxx-xxxxxx xxxxxxxxx xxx x xxxxxxxxx xxxxxxxxxx-xxxxxxxxx xxxxx xx xxxxxxxxxx xxxxx, xxx xxxxxxxxxxxx xxx xxx xxxxxxxxx (xxx xxxxxx xxxx, xxx xxxxxx xxxxxxxxxx) xx xxx xxxxxxxx xxxx-xx.
xxxxxxxxx xxx(xxxxxx, xxx_xxx).
xxxxxx: x xxxx xx xxxxxx, xx xxxxx x xxxx.xxx_xxx: xxx xxxxxxx xxx xx xxxxxxx, xx xxxxxxx ( xxx x ).xxxxxx [x_x, ..., x_xxx_xxx], xxxx xxxxxxx xx x xxxxxxxx, xxxxx xxx
xxxxxxxx xxxxxxxxx: xxxxxx xxx xxxxx xxxxxx xxxx xxxx xxx xxxxxx xxxx
( xxx x ), xxxx
[ x_x ;=; xxxx{xxx_{x=x}^{x-x} (x_x - xxx x)(x_{x-x} - xxx x)} {xxx_{x=x}^{x-x} (x_x - xxx x)^x} ]
xxxx xxxx xxxxxxxxxx xxx xxxxxxxxx xxxx xxxx: xxx xxxx xx xxxxxxxx xxxx
xxxx xxx xxxx xxxxxx (xxx xxx xxxxxxxxxxx xxxxxx), xxx xxx xxxxxxxxxxx
xx xxx xxxx-xxxxxx xxx xx xxxxxxx xxxxxxxxxx xxx xxxxx xxx. x xxxxxxxx
xxxxxx, xx x xxx xx xx xxxxxx xxx xxxxxx xxxxxx, xxx xxxxxxxxxxxxxxx
x.x xx xxxxxxxxxx xxxx.
xxx([x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x, x.x], x)
# [x.xxx, -x.xxxx, -x.xxxx]
xxx([x.x, -x.x, x.x, -x.x, x.x, -x.x, x.x, -x.x], x)
# [-x.xxx, x.xx]
xxx xxxxxxxxxxx xxxxxx xxxxx xxx xxxxxxxxx xx xxxx xxxxxxxxx: xxxxxxxx xxxxxxxx xx xxx x, xxxxxxxx xxxxx xx xxx x.
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