Machine Learning, Data Science, Data, Computer Science, Mathematics.
following is a 3x3 matrix : But for a vector it is always No. of rows x 1 or 1 x No. of columns, never both. Example : The first is 1x3 vector while the second is 3x1 vector. Notations - Matrix names are generally denoted by capital letter and vectors by small letters. Each element has a subscript