cumsum-2.m

GNU Octave is a high-level language, primarily intended for numerical computations. It provides a c

all (all (cumsum ([1, 2, 3; i, 2i, 3i; 1+i, 2+2i, 3+3i])
	  == [1, 2, 3; 1+i, 2+2i, 3+3i; 2+2i, 4+4i, 6+6i]))