f802445e-68cc-410e-aac6-ead63adad3ed 11 15 12 decimal

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

data char size clr plot k 1 data rows range r3 k el char : r4 k el size : r5 k el clr : 13 mat for data r3 r4 r5 augment 21 line :

x y n Poly j 1 n 1 + (range j 1 ≡ X x x / vectorize : X X x j 1 -^vectorize augment : if for a X transpose X * : b X transpose y * : c a 1 -^eval b * : X c * c 12 mat 51 line :

xL 0.5 1.1 1.5 2.1 2.3 51 mat :

yL 3233 34.2 35.1 35.7 51 mat :

xP 12345661 mat :

yP 0.9 2.4 7 17.4 30.5 48.3 61 mat :

order 4 :

Y1 xL yL 1 Poly 1 el : C1 xL yL 1 Poly 2 el : 21 sys

Yo xP yP order Poly 1 el : Co xP yP order Poly 2 el : 21 sys

Yo Co 12 mat 0.943 2.184 7.433 16.967 30.716 48.257 61 mat 3.083 3.534 - 1.216 0.192 0.015 - 51 mat 12 mat

Y1 C1 12 mat 31.95 33.18 34 35.23 35.64 51 mat 30.93 2.05 21 mat 12 mat

data xP yP augment :

recast the export
copy/paste/isolate c x f c i 1 + el x i^(* i 0 order sum :

export the fit c/w  vector 'c' c x f c 1 el x x c 4 el x * c 3 el + (* c 2 el + c 5 el x 3^* + (* +

XY data o 5 black plot :

c Co :

data c x f XY 3 1 sys

c 3 f 7.43

i 1 xP rows range sanity i el c xP i el f : for

c 1 f c 2 f c 3 f c 4 f c 5 f c 6 f 61 mat 0.9 2.2 7.4 17 30.7 48.3 61 mat

c xP f 6.9 17.8 31.7 45.7 59.6 73.6 61 mat

sanity 0.9 2.2 7.4 17 30.7 48.3 61 mat

puzzling or bug ?