AP ICET 10 Sep 2020 Shift 2 Paper

Question : 133 of 200

Marks: +1, -0

Algebraic and Geometrical Ability

A is a 2x2 matrix, such that

A[\table1;-1]=[\table-1;2]\and A^2 [\table1;-1]=[\table1;0]

. Then the sum of the elements of A is

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