(sum,List,List,Function)
sum(v,w,f)
-- yields the sum of the results obtained by applying
f
to each of the pairs
(i,j)
of elements from the lists or sequences
v
and
w
, which should be of the same length.
i1 : R = ZZ[x,y,z];
i2 : sum({2,3,4},{x,y,z},(i,j)->j^i)
4 3 2
o2 = z + y + x
o2 : R
See also
sum
.
