NL/Documentation/How Tos/Calc: functie EENHEIDSMAT
EENHEIDSMAT
Geeft een eenheid (identiteits-)matrix van een bepaalde grootte terug.
Syntaxis:
EENHEIDSMAT(grootte)
- geeft de eenheids-matrix, ook wel de identiteits-matrix I genoemd, van de grootte grootte (een geheel getal groter dan nul).
- De identiteits-matrix heeft enen op de leidende diagonaal en nullen op andere.
- EENHEIDSMAT geeft een matrix terug en moet worden ingevoerd als een matrixformule (bijvoorbeeld door {{#switch:ctrl
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = Ctrl
}} {{#if:Shift| + {{#switch:shift
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = Shift
}} }}{{#if:Enter| + {{#switch:enter
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = Enter
}} }}{{#if:| + {{#switch:{{{4}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{4}}}
}} }}{{#if:| + {{#switch:{{{5}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{5}}}
}} }}{{#if:| + {{#switch:{{{6}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{6}}}
}} }} te gebruiken in plaats van alleen {{#switch:enter
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = Enter
}} {{#if:| + {{#switch:{{{2}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{2}}}
}} }}{{#if:| + {{#switch:{{{3}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{3}}}
}} }}{{#if:| + {{#switch:{{{4}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{4}}}
}} }}{{#if:| + {{#switch:{{{5}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{5}}}
}} }}{{#if:| + {{#switch:{{{6}}}
| shift = ⇧ Shift
| up = ↑
| down = ↓
| > = →
| < = ←
| enter = ↵ Enter
| cmd = ⌘ Cmd
| command = ⌘ Cmd
| opt = ⌥ Opt
| option = ⌥ Opt
| tab = Tab ⇆
| backspace = ← Backspace
| << = ← Backspace
| bs = ← Backspace
| * = *
| # = #
| ; = ;
| : = :
| #default = {{{6}}}
}} }}).
Voorbeeld:
=EENHEIDSMAT(2)
- indien ingevoerd als een matrixformule in cel B3, geeft {1;0|0;1} terug, zodat B3, C3, B4 en C4 respectievelijk 1, 0, 0, 1 weergeven.
{{NL/Documentation/ZieOok|
