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Diffstat (limited to 'Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-20.tex')
-rw-r--r-- | Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-20.tex | 12 |
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diff --git a/Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-20.tex b/Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-20.tex new file mode 100644 index 00000000000..515b958a9b0 --- /dev/null +++ b/Master/texmf-dist/doc/latex/guide-to-latex/exercises/chap7/exer7-20.tex @@ -0,0 +1,12 @@ +\documentclass{article} +%\setlength{\textwidth}{140mm} +\begin{document} +\[ \begin{array}{@{}r@{\;=\;}l@{\qquad}r@{\;=\;}l@{}} + \sin2\alpha & 2\sin\alpha\cos\alpha, & + \cos2\alpha & \cos^2\alpha - \sin^2\alpha\\ + \sin3\alpha & 3\sin\alpha-4\sin^3\alpha & + \cos3\alpha & 3\cos^3\alpha - 3\cos\alpha\\ + \sin4\alpha & 8\cos^3\alpha\sin\alpha - 4\cos\alpha\sin\alpha & + \cos4\alpha & 8\cos^4\alpha - 8\cos^2\alpha + 1 + \end{array} \] +\end{document} |