slip-boxreference-notesnormal equationnormal equation Θ^=(XTX)−1XTY\hat{\Theta}=(X^{T}X)^{-1}X^{T}YΘ^=(XTX)−1XTY Where Θ^\hat{\Theta}Θ^ is the value of Θ\ThetaΘ that minimizes the cost function