13d63a35-e90c-4534-a911-6ac439702245 16 6 9 decimal

&[DATE] &[TIME] - &[FILENAME]

vx vy a b c plotG a char ≡ b size ≡ c color ≡ 13 mat n vx length : plot vx 1 el vy 1 el a b c augment : i 2 n range plot plot vx i el vy i el a b c augment stack : for plot 51 line :

X 1 - 1431 mat :

Y 41331 mat :

x φ 1 x x 2^31 mat :

Cholesky linear solver ...
it solves for the linear 
combination in Legendre LS j 1 X length range i 1 x φ length range M i j el X i el φ j el : for for Φ M transpose M * : d M transpose Y * : b Φ 1 -^eval d * : 41 line

x fit b x φ * :

XY X Y + 14 red plotG :

x fit XY 2 1 sys

Choleski b 2.066667 1.5 - 0.433333 31 mat

sanity check X 1 el fit X 2 el fit X 3 el fit 31 mat 41331 mat