Exercise_4 - THE CHINESE UNIVERSITY OF HONG KONG Department...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: THE CHINESE UNIVERSITY OF HONG KONG Department of Mathematics MAT2310 Linear Algebra and Applications (Fall 2007) Solution of Exercise 4 (In Class) Let 1 -1 2 1 1 A= 3 2 -1 3 1. Find the determinant of A expanding by cofactors of the third row. 2. Find the determinant of A expanding by cofactors of the second column. Solution: 1. 2 (-1)3+1 2. (-1) (-1)1+2 3 1 2 3 + 1 (-1)2+2 1 2 2 3 + (-1) (-1)3+2 1 2 3 1 =1 -1 2 1 1 + (-1) (-1)3+2 1 2 3 1 + 3 (-1)3+3 1 -1 3 1 =1 ...
View Full Document

This note was uploaded on 05/18/2010 for the course MATHEMATIC MAT2310 taught by Professor Dr.jeffchak-fuwong during the Spring '06 term at CUHK.

Ask a homework question - tutors are online