Parenthesis auto matching of formula occupying multi lines

#1

I am trying to type a formula so long that I want to break it into multilines:

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But I can’t write the begining parenthesis and ending parenthesis in different lines, not to say autosizing.
I am typing the formula in a tabular encapsulated in a equation envirenment.
So what is the best way to break a long formula into multilines and the parenthenses in different lines are matched and autosized?

#2

What is your reason for using a equation in a tabular? Could you instead use an eqnarray*, which does line breaking with matching brackets?

#3

I am using the folded-grouped tag following the practice here.
By the way, the eqnarray* is not working as expected, am I using it wrong:

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#4

You can put some explicit multiplication symbols (* Tab) in the product to indicate where the formula can be broken.

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#5

Thanks for your reply!
Sorry to ask another primary question:
the second collum in a eqnarray is used for vertical alignment, right? I ask this question because I found that only when I put the formula in the third collum will the auto-breaking occur.

#6

And I find that auto-breaking occurs in an equation but not in a tabular inside equation. Is there anyway to chieve auto-breaking in this environment?

#7

It seems to work if you put wide-tabular in a equation.

#8

Yes, I believe that’s correct. Breaking works in the first and third columns.

#9

Thanks for your kind reply!
Now I can fold inter mediate derivation with auto-breaking merits:

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Unfold:
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image.png1179×606 97.4 KB

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#10

So how exactly did you solve it? Did you do eqnarray inside equation? or wide-tabular inside equation?

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#11

I am using folded-grouped inside equation to fold the derivation steps of some formula, and to get the auto-breaking merits work I use the wide-tabular inside folded-grouped rather than the plain tabular.

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