# Lecture - 7 Chapter 3 Matrices

The most difficult thing is the decision to act, the rest is merely tenacity. –Amelia Earhart

00:00:58 NCERT Solutions Miscellaneous Exercise Question 4

If A and B are symmetric matrices, prove that AB – BA is a skew symmetric matrix.

00:05:18 NCERT Solutions Miscellaneous Exercise Question 5

Show that the matrix B′AB is symmetric or skew symmetric according as A is symmetric or skew symmetric.

00:11:28 NCERT Solutions Miscellaneous Exercise Question 6

00:16:28 NCERT Solutions Miscellaneous Exercise Question 7

00:18:48 NCERT Solutions Miscellaneous Exercise Question 8

00:20:58 NCERT Solutions Miscellaneous Exercise Question 9

00:23:28 NCERT Solutions Miscellaneous Exercise Question 10

00:35:28 NCERT Solutions Miscellaneous Exercise Question 11

00:42:18 NCERT Solutions Miscellaneous Exercise Question 15

00:45:08 NCERT Solutions Miscellaneous Exercise Question 14

00:46:48 NCERT Solutions Miscellaneous Exercise Question 13

00:49:38 NCERT Solutions Miscellaneous Exercise Question 12

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