DesignMatrix
DesignMatrix[{{x11, x12, ..., y1}, {x21, x22, ..., y2}, ...}, {f1, f2, ...}, {x1, x2, ...}] constructs the design matrix for the linear model β₀ + β₁f₁ + β₂f₂ + ....
Examples
DesignMatrix[{{1, 1}, {2, 2}, {3, 4}}, {x, x^2}, x]Please visit the official Wolfram Language Reference for more details.