The Determinant and Inverse of a Matrix on Casio Classwiz fx-991EX | fx-570EX Calculator

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⨸ Aʙᴏᴜᴛ Tʜɪs Vɪᴅᴇᴏ ⨸ - This video looks at finding and working with the determinant and inverse of both a 2 x 2 and a 3 x 3 matrix. We discover how to easily find the determinant and also use it to display the inverse in a different form than given by the calculator. We also confirm a matrix multiplied by its inverse gives the identity matrix.
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[@saujanyapoudel7378]

3:40 Perfect! Exactly what I needed. Gotta use this in my math class from now on. Thank you so much calculator guide ❤

[@Festus2022]

After you calculate the inverse matrix, can you save it to use it in another operation? Without writing it down and defining it as a new matrix ( time consuming), how can you take the inverse matrix and multiply it times a Matrix B?

[@sandroskocic7636]

You are a god

[@jergoz]

❤️

[@leahlester2620]

i accidently put matrix on how do i take it off

[@TheCalculatorGuide]

Go to menu and select 1:Calculate

[@leahlester2620]

@@TheCalculatorGuide haha thank you!

[@ShimzyYT]

Is this calculator allowed in IGCSE exams

[@TheCalculatorGuide]

I believe it is. Certainly for Pearson Edexcel.

[@zeeshanulhaq1976]

@@TheCalculatorGuide kindly tell me how we can use it for row operation in gauss elimination method

[@TheCalculatorGuide]

@@zeeshanulhaq1976 I will look into this, but it might be a while. I think it will be quite a complex process just on the calculator. I'll look into it though