Calculate Rational/Irrational Powers of a Matrix

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In summary, a rational power of a matrix is a number that represents the result of raising a matrix to a rational exponent, while an irrational power is a number that represents the result of raising a matrix to an irrational exponent. To calculate these powers, eigenvalues and eigenvectors must be determined and diagonalization or Jordan decomposition methods must be used. A fractional power of a matrix is a number that represents the result of raising a matrix to a fractional exponent, and the power of a matrix can be any real number as long as the matrix is square. Practical applications of calculating these powers include solving differential equations, modeling population growth, and analyzing financial data.
  • #1
Ali Asadullah
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We know how to calculate a integral powers of a matrix but how can we find rational fractional powers and irrational powers??
 
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The best way is to expand the result in a power series about the identity matrix. Then you can write:
[tex]M^a = I + a (M-I) + \frac{a(a-1)}{2}(M-I)^2 + ...[/tex]
 
  • #3
I is identity matrix of which order??
Let M is 4[tex]\times3[/tex] then what will be the order of I?
 
  • #4
Ali Asadullah said:
Let M is 4[tex]\times3[/tex]

Is it at all possible to calculate any power of a non square matrix? What will be M2 in your case?
 
  • #5
Soory Morek
 

FAQ: Calculate Rational/Irrational Powers of a Matrix

What is the definition of a rational/irrational power of a matrix?

A rational power of a matrix is a number that represents the result of raising a matrix to a rational exponent, where the exponent is a fraction. An irrational power of a matrix is a number that represents the result of raising a matrix to an irrational exponent, where the exponent is a non-repeating, non-terminating decimal.

How do you calculate the rational/irrational power of a matrix?

To calculate the rational/irrational power of a matrix, you first need to determine the eigenvalues and eigenvectors of the matrix. Then, use the diagonalization or Jordan decomposition method to express the matrix as a product of diagonal or Jordan blocks. Finally, raise each block to the power of the exponent and multiply the resulting blocks to get the final matrix.

What is the difference between a rational/irrational power and a fractional power of a matrix?

A rational/irrational power of a matrix is a number that represents the result of raising a matrix to a rational or irrational exponent. A fractional power of a matrix is a number that represents the result of raising a matrix to a fractional exponent, where the exponent is a positive or negative integer.

Can the power of a matrix be any real number, or are there limitations?

The power of a matrix can be any real number, including rational and irrational numbers. However, for a matrix to have a well-defined power, it must be a square matrix, meaning it has the same number of rows and columns.

What are some practical applications of calculating rational/irrational powers of a matrix?

Calculating rational/irrational powers of a matrix has various practical applications, such as in solving differential equations, modeling population growth, and analyzing financial data. It is also used in engineering and physics to solve problems related to matrices and linear transformations.

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