# History

 December 30 2018 Added search engine October 28 2018 Added Kronecker's delta December 24 2017 Added Definition of Determinant November 3 2017 Added Triangle Inequality October 22 2017 Added Variance of Exponential Distribution October 14 2017 Added Expectation value of Exponential Distribution October 7 2017 Added "a matrix is invertible" $\Longleftrightarrow$ "its determinant is non-zero" September 30 2017 Added Definition of linearly independence/dependence and examples September 24 2017 Added Computing the square root of 3 September 16 2017 Added inverse matrix of a 4x4 matrix using Gauss-Jordan elimination September 6 2017 Added inverse matrix of a 3x3 matrix using Gauss-Jordan elimination September 2 2017 Added Variance of Geometric Distribution August 19 2017 Added Expectation value of Geometric Distribution August 11 2017 Added Euler angle August 11 2017 Added Calculator of system of linear equations July 30 2017 Added Gaussian integral July 8 2017 Added Rodrigues' rotation formula June 25 2017 Added determinant 2x2 June 12 2017 Added cofactor matrix 4x4 June 3 2017 Added cofactor matrix 3x3 May 27 2017 Added cofactor matrix 2x2 May 13 2017 Added determinant 3x3 May 20 2017 Added inverse matrix 4x4 May 6 2017 Added inverse matrix 3x3 May 4 2017 Added cofactor expansion 4x4 May 4 2017 Added cofactor expansion 3x3 May 4 2017 Added 4x4 determinant May 3 2017 Added an error page May 3 2017 Added determinant 5x5 May 3 2017 Released