Machine Learning, Linear Algebra, Mathematics, Data Science, Basics.
negative? That’s actually a good question and based on the signs of the quadratic form, you could classify the definiteness into 3 categories: Positive definite if (Quadratic form) > 0 Positive semi-definite if (Quadratic form) ≥ 0 Negative definite if (Quadratic form) < 0 Positive-definite matrix