33 lines
678 B
TeX
Executable File
33 lines
678 B
TeX
Executable File
\documentclass[a4paper,12pt]{classPres}
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\usepackage{tkz-fct}
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\author{}
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\title{}
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\date{}
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\begin{document}
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\begin{frame}{Questions flashs}
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Développer l'expression
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\[ A = -3(x+5)^2 - 7 \]
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Mettre sous forme canonique
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\[ B = x^2 - 6x - 7 \]
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\end{frame}
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\begin{frame}{Correction}
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\begin{eqnarray*}
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A &=& -3(x+5)^2 - 7 \\
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&=& -3x^2 - 30x - 82
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\end{eqnarray*}
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\hline
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\begin{eqnarray*}
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B = x^2 - 6x - 7
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\end{eqnarray*}
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\[ \alpha = \frac{-b}{2a} = 3 \]
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\[ \beta = -\frac{b^2-4ac}{4a} = -\frac{36+38}{4} = -16 \]
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\begin{eqnarray*}
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B &=& (x - 3)^2 - 16 \\
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\end{eqnarray*}
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\end{frame}
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\end{document}
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