GUJCET 2019 Math Solved Paper

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Question : 40 of 40

Marks: +1, -0

If the inverse of the matrix A = [

1	2	2
2	−1	2
2	2	1

] is

1

5

[

-3	2	2
2	−3	α
2	2	−3

] then, α = ___________

3
4
2
–2

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