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  1. \documentclass[english]{article}
  2. \usepackage[T1]{fontenc}
  3. \usepackage[cp1250]{inputenc}
  4. \usepackage{amsmath}
  5. \usepackage{babel}
  6. \usepackage{polski}
  7. \begin{document}
  8. \author {IS Rok 2 Grupa 4\\Nr indeksu: 299765\\Nr na liście: 105}
  9. \title{Gabriela Śreniawska}
  10. \maketitle
  11. \section*{Lista 6 Zadanie 19
  12.     \section*{Lista 7 Zadanie 22}
  13.     \section*{Lista 8 Zadanie 11}
  14.     \section*{Lista 9 Zadanie 36}
  15.     \begin{center}
  16.         $t^{2}y''+ty'+y=8t^{3}$
  17.         $t^{2}y''+ty'+y=0$
  18.     \end{center}
  19. }
  20. Podstawiamy:
  21.     \begin{center}
  22.             $y(t)=t^{k}$
  23.             $y'(t)=kt^{k-1}$
  24.             $y''(t)=k(k-1)t^{k-2}$
  25.             $k(k-1)t^{k}+kt^{k}+t^{k}=0$
  26.     \end{center}
  27. Wyliczamy Pierwiastki rlwnania:
  28. \begin{center}
  29.     $k_{1}=-i$
  30.     $k_{2}=i$
  31. \end{center}
  32. Podstawiamy i wyliczamy:
  33. \begin{center}
  34.     $e^{\varTheta}=cos\varTheta+sin\Theta,$
  35.     $t=e^{lnt}$
  36.     $y_{1}(t)=cos(lnt)-isin(lnt)$
  37.     $y_{2}(t)=cos(lnt)+isin(lnt)$
  38.     $Y_{1}(t)=\frac{1}{2}y_{1}(t)+\frac{1}{2}y_{2}(t)=cos(lnt)$
  39.     $Y_{2}(t)=sin(lnt)$
  40. \end{center}
  41. Otrzymujemy:
  42. \begin{center}
  43.     $y(t)=c_{1}cos(lnt)+c_{2}sin(lnt)$
  44. \end{center}
  45.  
  46.    
  47.     \section*{Lista 10 Zadanie 6}
  48.     \section*{Lista 11 Zadanie 15}
  49.    
  50. \end{document}
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