quad_form: Quadratic form x^T P x

In CVXR: Disciplined Convex Optimization

Quadratic form x^T P x

Description

When x is constant, returns t(Conj(x)) %*% P %*% x (affine in P). When P is constant, returns a QuadForm atom (quadratic in x). At least one of x or P must be constant.

Usage

quad_form(x, P, assume_PSD = FALSE)

Arguments

x	An Expression (vector)
P	An Expression (square matrix, symmetric/Hermitian)
assume_PSD	If TRUE, assume P is PSD without checking (only when P is constant).

Value

A QuadForm atom or an affine Expression

CVXR documentation built on March 6, 2026, 9:10 a.m.