From: Tohid on
Hi mates,

I would like to build a D-optimal Design uisng matlab with the following information:

y=b0+b1 x1+b2 x2+b3 x3+b4 x1^3 +b5 x1*x2

when

X1: 5 levels (-1, -0.5, 0, 0.5, 1)
X2: 2 levels (-1, 1)
X3: 2 levels (-1, 1)

with N runs.

Many thanks
Tohid