4. Who & When invented Matrix?
Although a simple form of
matrices may have been used by
the Mayans (and maybe other
cultures; see below), the true
mathematical use of a matrix
was first formulated around
1850, by English mathematician,
poet, and musician James
Sylvester(1814–1897).
5. Type of matrix
Square matrix
Diagonal matrix
Identity matrix
Transpose
Symmetric
Skew symmetric
Orthogonal
Trace of matrix
Addition, Matrix
multiplication
Inverse matrix
Solving system of linear
aqua
Gaussian elimination
Rank and nullity
Liner dependent and
independent
Basis
Dimension
Calay-Hamilton theorem