The affine rank minimization problem consists of finding a matrix of minimum rank that satisfies a given system of linear equality constraints. Such problems have appeared in the literature of a ...

Simultaneous equations are two linear equations that can be solved using bar models. By remembering that the same letter will always have the same value we can work out the missing values.

C. G. Khatri, Sujit Kumar Mitra, Hermitian and Nonnegative Definite Solutions of Linear Matrix Equations, SIAM Journal on Applied Mathematics, Vol. 31, No. 4 (Dec ...

But what if you could use your smartphone to solve equations by pointing the camera at the problem in your textbook instead of using a graphing calculator? That is the idea behind PhotoMath.