HI guys!!

just need working out for these questions thank (doesn't need to be thorough)

(a) By applying Kirchhoff's Law to an electric circuit, we obtain the following equations: I - 32 + 213 = -4 2/1 - 12 + 41 =7 3/ + 12-513 = -4 where I, I, and I represent currents [in Amps). Solve this system to find the values of /1, I, and Is. Use Gaussian row reduction and reduce the augmented matrix of the system to its reduced row echelon form, if possible.[h] Consider the matrix: 1 l 2 4'1 = l 2 1 1 1 [i] Show that J; = 1 is one of the eigenvalues of A. [E] Find the eigenveeter of A corresponding to J. = 1. [1:] Let A.B and C be 2 x 2 matrices such that AB = 45' and he 1): c412) Find the matrix A