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Re: MATRIX LOGARITHM (and EXPONENTIAL) [message #74693]

Thu, 27 January 2011 16:11

James[2]
Messages: 44
Registered: November 2009

Member

On Jan 27, 4:10 pm, James <donje...@gmail.com> wrote:
>
> If the matrix A is diagonalizable, then:
>
> eigenvals = LA_EIGENPROBLEM(A, EIGENVECTORS=evecs)
> expA = evecs # diag_matrix(exp(eigenvals)) # invert(evecs)
> logA = evecs # diag_matrix(alog(eigenvals)) # invert(evecs)

sorry, replace INVERT with LA_INVERT to account for complex
eigenvectors.

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[Message index]

		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: James[2] on Thu, 27 January 2011 16:11
		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: James[2] on Thu, 27 January 2011 16:10
		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: pgrigis on Thu, 27 January 2011 14:40
		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: pgrigis on Thu, 27 January 2011 14:39
		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: penteado on Thu, 27 January 2011 14:37
		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: zhaobw1993 on Wed, 21 October 2015 16:04
		Re: MATRIX LOGARITHM (and EXPONENTIAL) By: chris_torrence@NOSPAM on Fri, 23 October 2015 10:52

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