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  • kengkia
    kengkia's Avatar
    3,493 posts since Aug '04
    • 06 Jul `08, 12:21AM

      can anyone one here 're-teach' me abt matrix and it's basic operations? i have learnt in sec. skl but throw everything back to skl lo..but i want to re-learn it to do something..thanks in advance..

  • jiaxing2
    jiaxing2's Avatar
    16 posts since Jun '08
    • 06 Jul `08, 9:53AM

      a b    +  w   x          =    a + w        b + x

      c d         y    z                c + y           d + z

      same for subtraction

      a  b    *  w   x           =  aw+by        ax+bz

      c d        y     z                cw+dy        cx+dz

      determinant :

      ( a      b

        c        d )            Det (M) = ad -bc

      Inverse:          = 1/(ad-bc)  ( d      -b

                                                    -c      a)

      3 x 3 onwards require alot more calculation...

       

  • kengkia
    kengkia's Avatar
    3,493 posts since Aug '04
  • wishboy
    wishboy's Avatar
    1,269 posts since Aug '05
  • kengkia
    kengkia's Avatar
    3,493 posts since Aug '04
    • 07 Jul `08, 11:21PM
      Originally posted by wishboy:

      this yr sec 4 batch o lvl no more transformation liao


      ya...i just read the maths textbook ard...only..like say a level maths and sec a maths then got...

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