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using sumproduct
I am trying to multiply elements of two arrays of length 10 and sum the 10
products. The first array is A1 - A10 (vertical). The second array is C1 - L1 (horizontal). This formula works: =A1*C1+A2*D1+A3*E1+A4*F1+A5*G1+A6*H1+A7*I1+A8*J1+A 9*K1+A10*L1 I was told that this is dumb and to use sumproduct. So I try: =SUMPRODUCT(A1:A10,C1:L1) and all it tells me is #VALUE! Now I am sure that this is really simple, but I am stumped and will appreciate and help anyone can give me. -- jake |
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