Invert(<Matrix>) Won't Take a Matrix

NetherGranite shared this question 2 years ago

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I have a Matrix T defined by T={{1,2},{3,4}}. Attempting to write Invert(T) gives me an error, saying that T is a List. What should I do?

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Comments (4)

Simona Riva ● 2 years ago

Ok, I see it now.

The command works fine in v.5 and v.6 Classic, but it doesn't work in Graphing Calculator app.

Let's see what the Devs say :)

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mathmagic ● 2 years ago

https://help.geogebra.org/t...

NOTE: I am not a dev

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Simona Riva ● 2 years ago

Hi Mathmagic,

I've looped this post to the Devs because the error message in the Graphing Calculator app is not "Unknown command", but it just doesn't recognize the matrix as such. I think that it's different :) from symbolic commands that have been taken away from the Graphing Calculator because of exam compatibility (unless the inversion of matrices is meant as a CAS command)

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mathmagic ● 2 years ago

I suppose so because the behaviour of invert is similar to integral

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