SOLUTION: Que:If A is an invertible matrix of order 2,then det(A^(-1)) is equal to ? My solution: {{{A^(-1)=(1/|A|)*(adj(A))}}} So, |A^(-1)|={{{|(1/|A|)*(adj(A)|}}} ={{{|

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Question 187223: Que:If A is an invertible matrix of order 2,then det(A^(-1)) is equal to ?
My solution:
AMP Parsing Error of [A^(-1)=(1/|A|)*(adj(A))]: Invalid expression '|A|)*(adj(A))': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. .
So, |A^(-1)|=AMP Parsing Error of [|(1/|A|)*(adj(A)|]: Invalid expression '|(1/|A|)*(adj(A)|': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. .
=AMP Parsing Error of [|(1/|A|)|*|(adj(A))|]: Invalid expression '|(1/|A|)|*|(adj(A))|': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. .
=AMP Parsing Error of [(1/||A||)*|A|^(n-1)]: Invalid expression '||A||)*|A|^(n-1)': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. .
=AMP Parsing Error of [|A|^(n-1)/(|A|)]: Invalid expression '|A|^(n-1)/(|A|)': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. .
Given order =2
=>|A^(-1)|=AMP Parsing Error of [|A|/|A|]: Invalid expression '|A|/|A|': syntax error at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 203. . =1
Answer given at the back of the textbook is 1/|A|
How to arrive at such a result?

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Your post was completely gargled.
Cheers,
Stan H.

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