Hello,
I am sure this has been asked before. What I am trying to do is to reverse the order for a sumproduct:
Sumproduct( A1:A3,B1:B3) == A1*B1 + A2*B2 + A3*B3
Instead, what I'm after is
Sumproduct( A1:A3, Reverse(B1:B3)) == A1*B3 + A2*B2 + A3*B1
Thank you!