Answer Happy

please solve those questions 3.1 and 3.2 step by step. if you are handwriting then please write the letters clearly. Thank you so much.
Problem 3.1. Compute determinants of the following matrices (for arbitrary n): 1 1,2 1,3 1,n-1 a1,n 21 22 02,3 2,n-1 a2,n a3n 21 22 23 ... *** [6 5 7 10117 5 6 217 cos(e) 0076 7 ... X2 ... ... In-1 an-1,n L006 X2 X3... In-1 In Problem 3.2. Let 2 1 0 1 2 1 0 1 2 Dn := det ... ... ... ... ... ... 0 0 0 X1 X1 has size nxn). 0 ... 0 0 0 ... 1 0 1 2 ... = 1, and all other entries are equal to 0; the matrix (in the matrix, we have ai,i = 2, ai,i+1=1, ai,i-1 a) Prove that Dn = 2Dn-1 Dn-2. b) Compute Dn for any n (Hint: use a) and induction).