13 48 6. 1.31 {%} = (a) u(t 4) [3e'24) _ 23364)] 3 S (b) \"(t _ 4) [362(t4) _ 263{E4)] (C) \"(t _ 4) [263(t4) _ 38_2(t_4)] (d) \"(t 4) [23364) 36264)] (e) None of these 7. The general solution of the differential equation 43323;\" + Smy' + y = 0, valid for :1: 7E 0, is given by (a) Cl|$|_% + c2|m|% (b) |$|-% (01 + 52111 an (C) (gm1W5 1 @lml'l'm (d) |z|_1[cl eos(2-\\/ln lzsl) + c2 sin(2-\\/1n|m|]] (e) None of these 1 8. For the equation :6ng + y\" + {_1 (a) Both 0 and 1 are regular singular points. (b) Both 0 and 1 are irregular singular points. (0.) 0 is regular singular and 1 is irregular singular. (d) 0 is irregular singular and 1 is regular singular. (e) None of the above