06bf4731-d709-45a1-96c6-8a50c40d926a 10 6 9 decimal

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

Dot function spread sheet style. User select 'idx' v1 v2 idx x Dot i idx Vec i el v1 i el v2 i el * eval x * : for Vec 21 line :

By convention, the product of two vectors of equal length is the Σ of the element wise product, i.e: a number. For the 'Dot product' to be more profitable, you must explode the "convention". By same token, make it even more profitable by subjecting to a user selection 'idx' of the "element-rows". The core numerical algorithm is the 'Dot product' thus the named function => Dot(v1,v2,idx,x)

b 0.036857 0.724538 0.898938 0.266432 - 0.649127 - 51 mat :

c 1234551 mat :

V b c 13513 mat 1 Dot :

V V sum 21 mat 0.036857 0 2.696814 0 3.245635 - 51 mat 0.511964 - 21 mat

==================================================

idx 34513 mat : x 0.123456789 : V b c idx x Dot : 31 line

V V sum 21 mat 00 0.33294 0.131571 - 0.400696 - 51 mat 0.199327 - 21 mat

==================================================

idx 1 b rows range : x 1 : V b c idx x Dot : 31 line

V V sum 21 mat 0.036857 1.449076 2.696814 1.065728 - 3.245635 - 51 mat 0.128616 - 21 mat