Given I2. Find determinant I2. also find determinant 3I2.
As I2 is an identity matrix of second order
So I2 =
And det(I2 ) = 1*1 - (0*0) = 1
And 3I2 means all the element are multiplied by 3.
Hence 3I2 =
Hence det(3I2 ) = 3*3 - 0*0 = 9 (ans)
So I2 =
And det(I2 ) = 1*1 - (0*0) = 1
And 3I2 means all the element are multiplied by 3.
Hence 3I2 =
Hence det(3I2 ) = 3*3 - 0*0 = 9 (ans)