Linear algebra / Stephen H. Friedberg, Arnold J. Insel, Lawrence E. Spence. Friedberg, Stephen H. Insel, Arnold J. Spence, Lawrence E. Algebras, Linear. QA184.2 .F75 2003 512.5 21 FRL Includes index. Upper Saddle River, N.J. : Pearson Education, c2003. c2003. 2003 Text xii, 601 p. : eng