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Sumatory in LaTeX

  1. Dec 5, 2011 #1
    Hy everyone!

    I want to include this two lines:

    but only in the bottom of the sumatory. Is that possible?

    Thanks in advance for the help!
  2. jcsd
  3. Dec 5, 2011 #2

    D H

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  4. Dec 5, 2011 #3
    Awesome! Thank U very much!!!!!

    Can I ask U something else? Do you know if I can include text in cursive? The sentence is

    [tex] \textbf{L} (U) = f(x) [/tex]

    where L (that should be in cursive) is a differential operator like
    [tex]\frac{\partial}{\partial x}[/tex]

    Thanks in advance again!!!

  5. Dec 5, 2011 #4

    D H

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    \mathcal L(U) = f(x)

    [tex]\mathcal L(U) = f(x)[/tex]
  6. Dec 5, 2011 #5
    Wow DH! Thank U very very much! My work is perfect now.


  7. Dec 5, 2011 #6


    Staff: Mentor

    We call this symbol - [itex]\sum[/itex] -- a summation, in English.
  8. Dec 5, 2011 #7
    Thanks Mark! My language is Spanish! :)
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