Created by Brandon Lilly, a world-class powerlifter with a 2,000+ pound total across squat, deadlift, and bench press, the cube method is a 10-week powerlifting system designed to help you build ...

where J(x) is the Jacobian matrix of partial derivatives of F with respect to x. For optimization problems, the same method is used, where F(x) is the gradient of the objective function and J(x) ...