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MATLAB. Prvi koraki. Določene operacije. A = [12, 5; 3, 11] min(A) max (A) sum(A) diag (A). "Rezanje" matrik. Element A(2,3) Podmatrika A(2:4, 1:3) Vrstica A(2,:) Stolpec A(:,4). Komentiranje. % začne komentar matI = eye (5) % matI je identična matrika velikosti 5. Naloga.

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Presentation Transcript
matlab

MATLAB

Prvi koraki

dolo ene operacije
Določene operacije
  • A = [12, 5; 3, 11]
  • min(A)
  • max(A)
  • sum(A)
  • diag(A)
rezanje matrik
"Rezanje" matrik
  • Element
    • A(2,3)
  • Podmatrika
    • A(2:4, 1:3)
  • Vrstica
    • A(2,:)
  • Stolpec
    • A(:,4)
komentiranje
Komentiranje
  • % začne komentar
  • matI = eye(5) % matI je identična matrika velikosti 5
naloga
Naloga
  • Sestavi magični kvadrat velikosti 5 x 5 in preveri, če je vse OK (diagonali, stolpci in vrstice seštejejo v isto vsoto)
  • helpmagic
  • magKv = magic(5)
  • Hura – le še kontrole
    • sum(magKv)
      • Vsote po stolpcih
    • Kaj pa po vrsticah?
      • Sum(magKv\')
    • Preverimo glavno diagonalo
      • sum(diag(magKv))
    • Kaj pa obratna?
      • Pomoč …
      • rot90
      • sum(diag(rot90(magKv)))
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