Question

properties of a matrix
and how to remember them easily​

Answer 1

Step-by-step explanation:

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth. Electrical circuits may be connected to ground for several reasons.

Answer: The new resistance will be 4 ohm

Answer 2

Answer:

A square matrix of order n has n rows and n columns. A square matrix [aij] is called a symmetric matrix if aij=aji, i.e. the elements of the matrix are symmetric with respect to the main diagonal. ... Two matrices A and B are equal if and only if they have the same size m×n and their corresponding elements are equal.

Step-by-step explanation:

revise it daily....one day...u will remember it....