<< eig

Linear algebra

gradient >>

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expm

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Computes the matrix exponential of a square matrix.

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Syntax

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res = expm(x)

Input argument

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x

a numeric value: scalar or square matrix (double or single)

Output argument

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res

a numeric value: a square matrix

Description

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expm(x) computes the matrix exponential of x.

The computation is performed by first block-diagonalizing x and then applying a Pade approximation on each block.

Example

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A = eye(3, 3);
res = expm(A)
res = expm(A+i)

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET