LyX - breaking long formula lines
How can I break long formulas in LyX into two (or more) lines? I know how to write several lines of equations in one "math box" but I'm looking for a solution to break lines even in the middle of a parenthesis.
I'm using LyX 1.6.4 and currently, when the formula is too big, it doesn't do anything (it just doesn't print the last segment of it, which is "beyond" the page).
Is this possible in LyX?
Answer
Yes, but you have to do it by hand.
Check out:
Lyx has an "Insert -> Math -> AMS multline environment" control, or you can use the solutions recommended above by entering Latex directly using the Insert Latex control.
Note on breqn
Michael Downes has done some extraordinary Tex coding with this package, but it is not robust enough for general use - it is mostly incompatible with Amsmath, for instance, breaks in hard-to-understand ways, and makes some demonstrably unsound linebreaks in formulae.
Automatic line-breaking in display formulae was listed as one of the top open research problems in Tex.