For simple systems of linear equations, Harrow and colleagues showed that their algorithm can be exponentially faster than the best solving methods that use a classical computer. One important caveat, ...

Mathematics of Computation, Vol. 23, No. 108 (Oct., 1969), pp. 787-812 (26 pages) The mathematical and numerical least squares solution of a general linear system of equations is discussed.

Learn how to form, solve, and rearrange equations using the tools and conventions of algebra with BBC Bitesize GCSE Maths.

Consumer demand systems and aggregate consumption in the USA: an application of the extended linear expenditure system. Two complete demand systems are fitted to USA data for the period 1930-72, using ...