40. let k, e r be such that every solution of d dx satisfies lim (a) (c) y(x) = 0. then 3k+ < 0 and k > 0 k ( s 0 and k > 0 (b) (d) ke+l> 0 and k < 0 ke (> 0, k

40. Let k, e R be such that every solution of d dx satisfies lim (A) (C) y(x) = 0. Then 3k+ < 0 and k > 0 k ( s 0 and k > 0 (B) (D) ke+l> 0 and k < 0 ke (> 0, k> 0 and l>0