Math & Science ⇒ Error in Equation

[Amitavo Roy]

This code lines are not running...I tryed it so many times...but unfortunately I dint succeeded....Please suggest me what is wrong in this code....

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Code, edit and compile here:

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\begin{multline}
tilde{\overline{P}}= \overline{P}_{n}+\bigtriangleup z \left [
\left \{ \frac{\overline{a}_{n}\gamma_{n}+j(\Omega _0 - \Omega
_{f}\gamma _{n})\overline{P}_{n}}{u_{z,n}} \right \} \right
+ jMag_{n}\overline{P}_{n} ]\\
\overline{u}_{z,n+1}= \overline{u}_{z,n} + \Delta z \left \{\left
( -\frac{|\overline{p}_{n}|^{2}}{\overline{u}_{z,n}} \right
).Mag_{n} \overline{p}_{n} \right \}\\
\tilde{\gamma}_{n+1} = \frac{1}{\sqrt {1-(v/c)^{2}}} =
\sqrt{1+\tilde{u}^{2}_{z,n+1}+|\tilde{\overline{p}}_{n+1}|^{2}}\\
\overline{p}_{n+1}=\overline{p}_{n} + \frac{\Delta z}{2}\left [
\left ( \frac{\overline{a}_{n+1}\gamma_{n}+j(\Omega _0 - \Omega
_{f}\gamma _{n+1})\tilde{\overline{P}}_{n+1}}{u_{z,n+1}} + j
Mag_{n+1}\tilde{\overline{P}}_{n+1}\right ) + \left(
\frac{\overline{a}_{n}\gamma_{n}+j(\Omega _0 - \Omega _{f}\gamma
_{n})\overline{P}_{n}}{u_{z,n}} + j Mag_{n}\overline{P}_{n}\right
) \right ]
\end{multline}
 
 
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Run LaTeX here

[cgnieder]

Since this is your second question about basically the same problem may I suggest you try to get some structure in you code: use indentation and several lines. Since this is a math formula and in math mode spaces are ignored there is no harm in doing it but it gives you a better view over what your doing.

The following is the first of the blocks you posted. I didn't add or remove anything but simply applied my advice to show you what I mean. Hopefully this helps you in finding what's wrong:

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Code, edit and compile here:

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  \tilde{\overline{P}}
  =
  \overline{P}_{n} + \bigtriangleup z
  \left[
    \left\{
      \frac
        {
          \overline{a}_{n}\gamma_{n}
          +
          j(\Omega _0 - \Omega_{f}\gamma _{n})
          \overline{P}_{n}
        }
        {u_{z,n}}
    \right\}
  \right
  +
  jMag_{n}\overline{P}_{n} ]
  \\
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Run LaTeX here

Regards

[Amitavo Roy]

Thanks a lot...
Ya I found my error....it is in my first block only...
Thanks...I will do accordingly...

[svend_tveskaeg]

Next time, you should make a minimal working example. Thorsten has already mentioned this here.

Furthermore, try and follow the suggestions about making the code more readable, as done here.