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LME Reference — linear algebra 207 Description dlyap(A,C) calculates the solution X of the following discrete-time Lyapunov equation: AXA0 − X + C = 0 All matrices are real. Example A = [3,1,2;1,3,5;6,2,1]; C = [7,1,2;4,3,5;1,2,1]; X = dlyap(A, C) X = -1.0505 3.2222 -1.2117 3.2317 -11.213 4.8234 -1.4199 5.184 -2.7424 See also lyap, dare dot Scalar product. Syntax v3 = dot(v1, v2) v3 = dot(v1, v2, dim) Description dot(v1,v2) gives the scalar products of vectors v1 and v2. v1 and v2 must be row or columns vectors of same length, or arrays of the same size; then the scalar product is performed along the first dimension not equal to 1. A third argument dim may be used to specify the dimension the scalar product is performed along. Examples dot([1; 2; 3], [0; 0; 1]) 3 dot([1, 2, 3; 7, 1, -3], [4, 0, 0; 0, 2, 0], 2) 4 2
