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sheila
11/15/12 04:02am

{{Root[-1 - #1 - 2 #1^2 + #1^3 &,
1]}, {{1 + 5 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1] -
2 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1]^2, -2 -
4 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1] +
2 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1]^2,
3 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1] -
Root[-1 - #1 - 2 #1^2 + #1^3 &, 1]^2,
1 - 5 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1] +
2 Root[-1 - #1 - 2 #1^2 + #1^3 &, 1]^2, 1}}}

This solution was given as the eigensystem to a matrix. Please can anyone explain how the first solution which is the largest eigenvalue becomes 2.54682 as a decimal? I have read about 'pure functions' but still confused.

many thanks, Sheila

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Subject (listing for 'slot notation')
Author Date Posted
slot notation sheila 11/15/12 04:02am
Re: slot notation Bill Simpson 11/15/12 1:15pm
Re: slot notation yehuda 11/15/12 1:55pm
Re: slot notation Michael 11/15/12 3:06pm
Re: slot notation Nasser M. Ab... 11/15/12 6:21pm
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