Two rows or columns same
Last updated at Dec. 23, 2021 by Teachoo
Ex 4.2, 1 Using the property of determinants and without expanding, prove that: |β(π₯ π π₯+π@π¦ π π¦+π@π§ π π§+π)| = 0 β = |β(π₯ π π₯+π@π¦ π π¦+π@π§ π π§+π)| C1 β C1 + C2 β = |β(π+ π π π+π@π+π π π+π@π +π π π+π)| C1 and C3 is same β =π By Property: if any two row or columns of a determinant are identical then value of determinant is zero