Solve the given equation that involves fractional indices

[Mark44]

'indices'

Indices -- the plural of index -- is the correct spelling. As far as I'm aware, there is no such word as indicies in English.

 

[chwala]

Indices -- the plural of index -- is the correct spelling. As far as I'm aware, there is no such word as indicies in English.

Thanks noted.

 

[epenguin]

It's not really English it's Greek. So not every native English speaker knows this particular singular-plural couple. (And actually that is true for a number of scientific terms.)

Oh, and while I am here, people have gone thoroughly through calculations of, I guess, some interest, but none of it had the point that your original equation before you mistranscribed it had.

 

[Mark44]

It's not really English it's Greek.

The word I said wasn't English was "indicies," a misspelling of indices. "Index" and its plural "indices" (also "indexes") are Latin in origin. See https://www.etymonline.com/word/index.

So not every native English speaker knows this particular singular-plural couple.

Absolutely. Some others include codex/codices, vortex/vortices, vertex/vertices, as well as words that end in -ix such as appendix/appendices, cicatrix/cicatrices (scar) and a few others. I suspect that these Latin plural endings will become obsolete if they aren't already.

 

[epenguin]

Exactly- some of us know, some of us don't know and some of us have a vague idea or feeling.