Need Solution

2. Consider the graphs 91 and 92 shown here. Let A, and A2 be their respective adjacenty matrices. U1 W1 VA U3 W3 WA 91 92 (a) Write down an isomorphism 4 : 91 -+ 92 such that 4(v1) = w4 and (v2) = w2, and find the permutation matrix P such that A2 = PA, PT. (b) Find the (1, 2) entry of A without using matrix multiplication