Generates Exponential Anticipated Coefficients Solves the exponential link function mean = exp(beta0 + beta1 * x) such that mean = mean_low when x = -1, and mean = mean_high when x = +1. Equivalently, solves this set of equations for beta0 and beta1: mean_low = exp(beta0 - beta1) mean_high = exp(beta0 + beta1)