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Minecraft
maestru (V)
Pe: 2013-02-06T07:06:24+02:00 In: In:

Teorie module

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10 raspunsuri

  1. bedrix
    expert (VI)

    notam 3^x-3^(y+4)=t
    Pentru a elimina confuziile: t^2>=0 (1) , valabila pentru orice valoare t
    Prin urmare daca in cursul unei rezolvari ajungi :
    a) la o conditie t^2<=0 (2) , din (1) si (2) rezulta o solutie unica t=0
    b) la t<0 (3) , din (1) si (3) rezulta contradictie, deci nu admite solutii

  2. Minecraft
    maestru (V) 
    *** QuickLaTeX cannot compile formula:

	\[
	\begin{array}{l}
	 {\rm{Notam }}3^x  - 3^{y + 4}  = t \\
	 {\rm{Pentru a elimina confuziile]
	
	
	

*** Error message:
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leading text: \end{document}
Improper \prevdepth.
leading text: \end{document}
Missing $ inserted.
leading text: \end{document}
Missing } inserted.
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 10 ended by \end{document}.
leading text: \end{document}
Missing } inserted.
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Emergency stop.
  4. edy8
    maestru (V)

    …

  5. Minecraft
    maestru (V)

    edy8 wrote: [quote=Minecraft]

    *** QuickLaTeX cannot compile formula:

	\[
	\begin{array}{l}
	 {\rm{Notam }}3^x  - 3^{y + 4}  = t \\
	 {\rm{Pentru a elimina confuziile]
	
	
	

*** Error message:
\begin{array} on input line 10 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 } 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 10 ended by \end{document}.
leading text: \end{document}
Missing } inserted.
leading text: \end{document}
Emergency stop.

    I) Solutia lui bedrix este clara, scurta si la obiect.

    II) Reproducerea solutiei este deficitara( frizeaza, pe alocuri, penibilul), din lipsa aprofundarii unor notiuni elementare.

    III) Scrie exact solutia primita, repeta scrierea, apoi repeta definitiile si proprietatile de la puteri si radicali. In final, mai scrie o data solutia.

    Aceasta e o cale a intelegerii (suprainvatarea !!)

        \[ {\rm{Daca 3}}^{\rm{2}} \ge 0 \Rightarrow 3 = 0 \]

  6. edy8
    maestru (V)

        \[ {\rm{Daca 3}}^{\rm{2}} \ge 0 \Rightarrow 3 = 0 \]



    Nu se respecta o regula elementara a jocului (matematic !!).

    Aici, reactia grabita (trepidanta) se termina cu iesirea din decor.

  8. Minecraft
    maestru (V)

        \[ \begin{array}{l} {\rm{Gasteropozi!}} \\ {\rm{Mult limpezi rapsozi}}{\rm{, }} \\ {\rm{Moduri de ode}} \\ {\rm{(}}...{\rm{)}} \\ {\rm{Gasteropode!}} \\ din{\rm{ }}Ion{\rm{ }}Barbu{\rm{ }}(matematician{\rm{ }} - poet) \\ \end{array} \]

  9. edy8
    maestru (V)

    \rm{Exista incantatii si mai lungi...\\\;\\ si cu posibile marcari de timbru :}

  10. bedrix
    expert (VI)

    revin cu o erata , datorata neatentiei:
    b) la t ^2<0 (3) , din (1) si (3) rezulta contradictie, deci nu admite solutii

  12. bedrix
    expert (VI)

    Ref. module :
    |t|>0 este valabila pentru orice numar real t nenul
    |t|=0 rezulta t=0
    |t|<=0 rezulta solutie unica t=0
    |t|<0 contradictie , nu admite solutii

  13. Minecraft
    maestru (V)

    bedrix wrote: Ref. module :
    |t|>0 este valabila pentru orice numar real t nenul
    |t|=0 rezulta t=0
    |t|<=0 rezulta solutie unica t=0
    |t|<0 contradictie , nu admite solutii

    Multumesc, Bedrix. Mi-am insusit teoria.
    PS
    Reamintesc ca sunt intr-a VII-a, dar s-a intamplat sa postez aici.

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