Nu pot sa-mi dau seama cum se calculeaza o astfel de cumpunere:
*** QuickLaTeX cannot compile formula:
\[
\begin{array}{l}
f]
*** Error message:
\begin{array} on input line 9 ended by \end{document}.
leading text: \end{document}
Improper \prevdepth.
leading text: \end{document}
Missing $ inserted.
leading text: \end{document}
Missing } inserted.
leading text: \end{document}
Missing \cr inserted.
leading text: \end{document}
Missing $ inserted.
leading text: \end{document}
You can't use `\end' in internal vertical mode.
leading text: \end{document}
\begin{array} on input line 9 ended by \end{document}.
leading text: \end{document}
Missing } inserted.
leading text: \end{document}
Emergency stop.
Daca f:R->R; f(x)=a*x+b cu a; b numere reale , a nenul atunci se demonstreaza prin inductie ca f compusa de n ori cu ea insasi este egala cu (a^n*)x+b(1+a+a^2+…+a^(n-1)) pentru orice n>1 natural