" I If "0

Intensity level of a sound of intensity I is 30 db. Then the ratio I//I_(0) is (where I_(0) is threshold of hearing )

If A = [(5,2),(-1,2)] and I = [(1,0),(0,1)] show that (A - 3I) (A - 4I) = 0

If A = [(4,2),(-1,1)] and I = [(1,0),( 0,1)] prove that (A - 2I) (A - 3I) = 0

The current is given by i = i_0 + i_0 sin omega t then its r.m.s value will be

Intensity level of intensity l is 30 dB. The ratio I/I_(0) is (where I_(0) is the threshold of hearing)

The matrix A(I+A)^(-1) is equal to ( if |A|!=0,|I+A|!=0)

The matrix [{:(" "0,-4+i),(4+I," "0):}] is

If A= [[6,2],[-1,3]] and I= [[1,0],[0,1]] show that (A-4I) (A-5I)=0

If A= [[5,2],[-1,2]] and I= [[1,0],[0,1]] show that (A-3I) (A-4I)=0