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             ___     _    _    __   __   _    _   
    ___     / _ \\  | \  / ||  \ \\/ // | |  | || 
   /   ||  | / \ || |  \/  ||   \ ` //  | |/\| || 
  | [] ||  | \_/ || | .  . ||    | ||   |  /\  || 
   \__ ||   \___//  |_|\/|_||    |_||   |_// \_|| 
    -|_||   `---`   `-`  `-`     `-`'   `-`   `-` 
     `-`

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發送短信 : Quadratic transformations of copula density and probability density