Quadratic Polynomial - Variables - N Variables Case

N Variables Case

In the general case, a quadratic polynomial in n variables x1, ..., xn can be written in the form

\sum_{i, j = 1}^{n} Q_{i,j} x_i x_j + \sum_{i = 1}^{n} P_i x_i + R

where Q is a symmetric n-dimensional matrix, P is an n-dimensional vector, and R a constant.

Read more about this topic:  Quadratic Polynomial, Variables

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