Text Formatting ⇒ To write a format of words

[Rahul]

image prob.jpg (5.56 KiB) Viewed 5814 times

I wish to write simply as described in figure.

[Rahul]

I have used \smash but the equal to sign is occuring in next line.

[cgnieder]

There is nothing really special about the formula. The formula in the picture is wrong, though: whoever typeset it forgot to mark the new labels as text with amsmath's \text{}. What you need is one of amsmath's multi-line environments (which are all explained both in amsmath and mathmode. Here's my proposal:

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}

\begin{gather*}
  s_{i_{\text{new}}}
  = \frac
      {a_k - a_1}
      {b_{k_{\text{new}}} - b_{1_{\text{new}}}} \\
  o_{i_{\text{new}}}
  = a_k - s_{i_{\text{new}}} \cdot b_{k_{\text{new}}}
\end{gather*}

\end{document}

Regards

[Rahul]

problem 22.jpg (6.88 KiB) Viewed 5803 times

There is one more problem regarding the symbol summ. How to write x,y under these symbols.

[cgnieder]

I don't understand... simply use \sum_{x,y}!

Regards

[Rahul]

[Rahul]

What about P ??? Had to use underset ???

[cgnieder]

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
  \frac{\sum_{x,y} P_{x,y}^2}{\sum_{x,y}(P_{x,y}-\tilde{P}_{x,y})^2}
\]

\[
  \frac{\sum\limits_{x,y} P_{x,y}^2}{\sum\limits_{x,y}(P_{x,y}-\tilde{P}_{x,y})^2}
\]
\end{document}

I like the first one better...

Regards

[localghost]

The new question has been split to this topic. Please ask only follow-ups to the initial question here.