Systems of linear equations and Matrices margaret l. - Belmont, Calif., Wadsworth Pub. Co. [1974] - ix, 93 p. illus. 26 cm. - Wadsworth precalculus mathematics series, v. 7 .
0534003303
74078033
Equations, Simultaneous.
Inequalities (Mathematics)
QA214 / .S97 2007