% This file:
%   http://anggtwu.net/LATEX/2023-2-C3-polis-2o-grau-defs.tex.html
%   http://anggtwu.net/LATEX/2023-2-C3-polis-2o-grau-defs.tex
%          (find-angg "LATEX/2023-2-C3-polis-2o-grau-defs.tex")
% Author: Eduardo Ochs <eduardoochs@gmail.com>
%
% (defun e  () (interactive) (find-angg "LATEX/2023-2-C3-polis-2o-grau.tex"))
% (defun ed () (interactive) (find-angg "LATEX/2023-2-C3-polis-2o-grau-defs.tex"))

% «.reset»		(to "reset")
% «.DFI»		(to "DFI")

\sa   {[R6]}{\CFname{R}{_6}}
\sa   {[S1]}{\CFname{S}{_1}}
\def\P#1{\left( #1 \right)}

% «reset»  (to ".reset")
\sa{reset}{
  \sa {x_0} {x_0}
  \sa {h}     {h}
  \sa {r}     {r}
  }
\ga{reset}

\sa{reset-S1}{
  \sa {x_0} {5}
  \sa {h}   {(-9)}
  \sa {r}   {3}
  }

\sa{(R6)}{
  \left(\begin{array}{rcl}
    y &=& (x-\ga{x_0})^2 + \ga{h} \\
      &=& Δx^2 + \ga{h} \\
      &=& Δx^2 - \ga{r}^2 \\
      &=& (Δx+\ga{r})(Δx-\ga{r}) \\
      &=& (x-\ga{x_0}+\ga{r})(x-\ga{x_0}-\ga{r}) \\
      &=& (x-(\ga{x_0}-\ga{r}))(x-(\ga{x_0}+\ga{r})) \\
   \end{array}
   \right)
  }
\sa{(S)}{
  \left[\begin{array}{rcl}
    x_0 &:=& \ga{x_0} \\
    h   &:=& \ga{h} \\
    r   &:=& \ga{r} \\
   \end{array}
   \right]
  }



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