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How to Find Determinent in 3x3 Matrices in Scientific Calculator fx-991ES.Solve Steps in Description

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Find Determinent of 3x3 Matrices in Scientific Calculator fx991ES.
Sloving Steps are Here;
Mode 6
Press 1 to Select Matrix A
Again press 1 to Select 3x3
Enter Matrix Data
Press AC Button
Shift + 4
Select 7 : Det
Again press Shift + 4
Select 3 : Mat A
Then Bracket Close
Press : =
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posted by perlooj2