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Thread: matrix algebra shortcut methods

  1. July 5th 2010, 04:28 PM #1
    aashishmath
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    matrix algebra shortcut methods

    I want to know the tricks/shortcuts to find,
    Rank,
    eigen values,
    inverse,
    determinant,

    of a matrix, ....... I know such type of tricks/shortcuts exists but what they are ?

    Please help me i am in a greate need of that...
    Thanks
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  2. July 5th 2010, 04:32 PM #2
    Also sprach Zarathustra
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    No shortcuts, only theory!
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  3. July 5th 2010, 08:36 PM #3
    aashishmath
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    Oh not at all the shortcuts exsists - I have seen it.
    Please help me.
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  4. July 6th 2010, 07:16 AM #4
    wonderboy1953
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    Quote Originally Posted by aashishmath View Post
    Oh not at all the shortcuts exsists - I have seen it.
    Please help me.
    Can you explain what you mean by a shortcut and give an example? (e.g. do you mean Gaussian elimination?)
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  5. July 6th 2010, 04:33 PM #5
    Anonymous1
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    A^{-1} = \left[\begin{array}{ccc} a&b \\ c&d\end{array}\right]^{-1}=\frac{1}{ad-bc}\left[\begin{array}{ccc} d&-b \\ -c&a\end{array}\right]

    I can show you how to do all those very quickly in the TI also.
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