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MATLAB

MATLAB. Prvi koraki. Matrike - vnos. Osnovni element Vnos: [ … ] Običajno jih shranimo v spremenljivko matA = [1 2 23; 3 5 6; 6 12 3; 3 4 1] matA je matrika dimenzije 4 x 3 Vrstice med sabo ločimo s ; Elemente v vrstici lahko ločimo tudi z vejico

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MATLAB

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  1. MATLAB Prvi koraki

  2. Matrike - vnos • Osnovni element • Vnos: • [ … ] • Običajno jih shranimo v spremenljivko • matA = [1 2 23; 3 5 6; 6 12 3; 3 4 1] • matA je matrika dimenzije 4 x 3 • Vrstice med sabo ločimo s ; • Elemente v vrstici lahko ločimo tudi z vejico • matB = [1, 2, 23; 3, 5, 6; 6, 12, 3; 3, 4, 1] • Po vnosu se "rezultat" izpiše

  3. Matrike - vnos

  4. Računanje • Seštevanje, odštevanje, množenje • matA + matB, matC – matA • rez1 = matA + matB • Transponiranje • ' • matA' • [1, 2; 10, 15]' • Vektor stolpec • [1, 12, 23, 4, 5]'

  5. Množenje • matA * matB' (zakaj transponiranje?) • ans

  6. Posebne matrike • eye(4) • zeros(3) • diag([12, 3, 4, 78]) • ones(3)

  7. ; na koncu ukaza • Pomeni, da se rezultat ne izpiše • Koristno ob velikih matrikah • A = ones(100) • B = ones(100);

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