Matrix Algebra and Applications
www.tcd.ie › Economics › staffMatrices in Economics One example of a matrix in economics is the IS-LM macro model.1 Y = C +I +G¯ (resource constraint) C = a +b(1 t)Y (consumption function) I = e lR (investment function) M¯ = kY hR (money demand) We can write the above system in matrix notation as: 2 6 6 4 1 1 1 0 b(1 t) 1 0 0 0 0 1 l k 0 0 h 3 7 7 5 2 6 6 4 Y C I R 3 7 7 ...
Mathematics for Economists
www.bauer.uh.edu › rsusmel › phd4. Matrix: Details Examples: 5 1 2 3 12 22 11 21; b a a a a A • Dimensions of a matrix: numbers of rows by numbers of columns. The Matrix A is a 2x2 matrix, b is a 1x3 matrix. • A matrix with only 1 column or only 1 row is called a vector. • If a matrix has an equal numbers of rows and columns, it is called a square matrix.