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

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發送短信 : Bernstein-type constants for approximation of |x|α by partial Fourier–Legendre and Fourier–Chebyshev sums