2. multiple choice: (i) let ? (t-c) be the dirac delta function centared at c 0, then the laplace transform of ? (t-c),f(s)-cart- is given by: (a) f(s)-e-c (b) f(s)e (c) fo) s (d) f(s) - f(t -c)e- -cs (2-1) 1 (2-a) (-1-)]is 1 (ii) the determinant of the matrix a = (a) det(a) = ? 2-a-3 (b) det(a) +-3 1(1-x) is (c) det(a)2-3a1 (d) det(a) a2 + 3-1 (iii) suppose that a is a 3 × 5 matrix, b s a 5 × 2 matrix, c is a2x3matrix, and d is a 3 × 3 matrix. then abc + cda is: (c) a 3x 5 matrix (d) undefined (a) a 3 x 3 matrix (b) a 2 x 5 matrix