Dot (a) and (b) (d) none of these 86. let a be a square matrix. then the characteristic equation of a is given by: ol (a) a-l| = 0 (b) a+2i =0 (c) a- = 0 (d) no

DOt (A) and (B) (D) None of these 86. Let A be a square matrix. Then the characteristic equation of A is given by: OL (A) A-l| = 0 (B) A+2I =0 (C) A- = 0 (D) None of these 87. The eigen vectors corresponding to distinct eigen values of a matrix are (A) linearly independent (B) linearly dependent (C) distinct and linearly dependent (D) None of these (19) XE(H-3)-MAT(6)