發送短信 : Positive solutions of complementary lidstone boundary value problems

  _____     _____     ______     ___      ______  
 / ____||  |  ___||  /_   _//   / _ \\   /_   _// 
/ //---`'  | ||__    `-| |,-   | / \ ||  `-| |,-  
\ \\___    | ||__      | ||    | \_/ ||    | ||   
 \_____||  |_____||    |_||     \___//     |_||   
  `----`   `-----`     `-`'     `---`      `-`'