x squared

[Neville]

I'm struggling to get Lazarus to produce the algebraic format for x-squared, that is a non-capital "x" followed by a smaller "2" which is elevated above the normal base line.

Can anyone offer any suggestions?

 

[wp]

x² = x + [Alt-Gr 2]

[LV]

@wp beat me to it

Edit: You can also choose Emoji & Math Symbols: Key 🪟 + .(point)

[Kays]

U+00B2 SUPERSCRIPT TWO is a compatibility character. Ideally new programs do not emit any compatibility characters (unless for the sake of interfacing with legacy software ≈ compatibility).

For mathematical notation, the use of superscript or subscript styling of ASCII digits is preferred over the use of compatibility superscript or subscript digits. See Unicode Technical Report #25, “Unicode Support for Mathematics,” for more discussion of this topic.

[Neville]

Thank you for your suggestions.  Unfortunately, I've not been clever enough to get the hang of it.

When I put the string together like

'x' + Alt-Gr 2 +

I get error:  identifier not found "Alt"

Am I being really stupid?

[Thaddy]

alt-gr is the right alt, not the left.

[Paolo]

typing alt-gr 2 doos nothing..

[ASerge]

When I put the string together like

'x' + Alt-Gr 2 +

FPC supports unicode. ² is a unicode character. You can enter it by typing 0178 on numpad with the Alt key pressed (Alt+0178), or on some keyboard layouts AltGr+2.

[Khrys]

x² = x + [Alt-Gr 2]

This only works on certain keyboard layouts (e.g. German  QWERTZ - see attachment), and most keyboards sold in the US don't even have an  Alt Gr  key.
The simplest way to input rarely-used special characters is to copy-paste them from sites like this one, IMO - if you don't know the code point beforehand, you're going to have to look it up anyways, so might as well copy it right then.

[Paolo]

here alt-gr 2 nothing, it works Alt+253

[Neville]

ASerge: typing 0178 on numpad with the Alt key pressed worked instantly.  Thank you.