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LucMeekesAnswer
23-Emerald IV
March 18, 2020

It is simply the 'inverse' of each element of your vector (so vectorization is implicit here). That's the only way way Mathcad can produce an answer that is not an error message.

 

The help on Matrix inverse is:

Matrix Inverse Operator

Keystroke: ^-1

 

This returns the inverse of a matrix. If M does not have an inverse, you'll see an appropriate error message.

Operands:

  • M is a square matrix having an inverse.

Your multiplication A * A^-1 results in 3, because A has three elements.

The symbolic (Maple) processor complains that the matrix should be square...

 

Success!

Luc

 
 
 
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6 replies

-MFra-21-Topaz II
21-Topaz II
March 18, 2020

Hi

It is wrong to define the matrix operator with square brackets. not [A] but simply A - although it is possible - and many ancient texts define it with square brackets. The inverse of a vector makes no sense.

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LucMeekes23-Emerald IV
23-Emerald IV
March 18, 2020

There's nothing wrong about that. It's the OP's method of marking matrices and vectors.

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LucMeekes23-Emerald IVAnswer
23-Emerald IV
March 18, 2020

It is simply the 'inverse' of each element of your vector (so vectorization is implicit here). That's the only way way Mathcad can produce an answer that is not an error message.

 

The help on Matrix inverse is:

Matrix Inverse Operator

Keystroke: ^-1

 

This returns the inverse of a matrix. If M does not have an inverse, you'll see an appropriate error message.

Operands:

  • M is a square matrix having an inverse.

Your multiplication A * A^-1 results in 3, because A has three elements.

The symbolic (Maple) processor complains that the matrix should be square...

 

Success!

Luc

 
 
 
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    LucMeekes23-Emerald IV
    23-Emerald IV
    March 18, 2020

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