發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Direct Fifth Order Block Backward Differentiation Formulas for Solving Second Order Ordinary Differential Equations