Question Number 85858 by jagoll last updated on 25/Mar/20
$$\mathrm{Is}\:\mathrm{a}\:\mathrm{matrix} \\ $$$$\mathrm{A}^{\mathrm{T}} \mathrm{A}\:\mathrm{always}\:\mathrm{positive}\:\mathrm{definite}? \\ $$
Is-a-matrix-A-T-A-always-positive-definite-