00:01
In this question, we need to determine whether the following statement is true or false.
00:05
It says that first option is if a contains row or column of zeros then zero is an eigenvalue.
00:13
So, this statement is clearly true.
00:17
The reason is since a contain a zero row thus implies that determinant of a is equals to zero.
00:33
Correct determinant of a will be equal to zero and we know that this determinant is equals to the product of eigenvalue which is equals to zero.
00:47
So, this implies that zero is an eigenvalue then only we will get determinant zero.
00:53
So, zero is one of the eigenvalue at least we will get.
00:58
Let us move to the second statement.
01:00
It says if two is an eigenvalue of a then a minus two i is not then a minus two i is not invertible.
01:11
Okay.
01:12
So, this statement is also true.
01:16
Okay.
01:17
So, let us explain the reasoning behind it since two an eigenvalue of a so this will implies that a minus two i is zero matrix zero matrix and this says that this will not be invertible because it is a zero matrix hence not invertible...