A very long equation under square root

[gaoy]

Hi,
I’m trying to enter a formula like this in TeXmacs:

I cannot use ‘Math->several equations’ to do the line break and alignment since it is under the same square root.
I don’t know how to add a new line in it, here is what I get if I continue typing:

Really appreciated if you can let me know some options to achieve this.
Thanks in advance.

[pireddag]

Hi,
you can put a table (example, a plain tabular) inside a math expression, and the table can go under a square root sign. I obtain

where I have also tweaked a bit the spacing between table rows. The upper part of the square root sign isn’t straight, it is a TeXmacs bug I think.

[mgubi]

Yes, it seems so. I also noticed in some situations that the bar over the square root does not align always perfectly. We may want to file a bug.

[gaoy]

Thanks pireddag for your help. I can input the equation now (with the same minor bug):

I also tweaked the spacing by cell alignment to right.
But what I learned further is to cascade the macros, table inside math here but I’m sure I’ll use more combinations.
Thanks again for your help!

[pireddag]

I have seen that you submitted it (https://savannah.gnu.org/bugs/?62423), thx!

[Bambi]

You can Calculate square root of number using different methods

[pireddag]

Hi @Bambi and welcome to the forum. I think that the original poster of this thread is concerned with writing (not calculating) an expression under the sign of square root. But still yours is an interesting link.

[re4zuaFe]

Is there any sort of “multiline” boxes, and let TeXmacs to break long formula in the box like this (creating a box to containe the things under the square-root)?

[pireddag]

Sorry I do not know. I need to browse the options of the table constructs, and can’t do that now.
Formulae have “natural” positions for line breaks and I would like a “multiline box for formulae” to split formulae nicely.
Perhaps someone else knows.