Hello    I'm trying to make code with some cash flows and rates data.   The data is as follows    Period       CF           Rate 1               1,200       0.04 2               1,100       0.05 3               1,000       0.06   Inv : 2,000   I want to get "x" value like this   2,000 = 1,200*(1-0.04*x) + 1,100*(1-0.04x)*(1-0.05x) + 1,000*(1-0.04x)*(1-0.05x)*(1-0.06x)   I use SAS Enterprise Guide that doesn't include proc optmodel, proc iml.   Could anyone help me out?? ... View more