發送短信 : Singular differential equations with (n,p) boundary conditions

 ______      ___                 ___      ____    
|      \\   / _ \\      ___     / _ \\   |  _ \\  
|  --  //  | / \ ||    /   ||  | / \ ||  | |_| || 
|  --  \\  | \_/ ||   | [] ||  | \_/ ||  | .  //  
|______//   \___//     \__ ||   \___//   |_|\_\\  
`------`    `---`       -|_||   `---`    `-` --`  
                         `-`