AP ICET 2019 Shift 1 Paper

Question : 133 of 200

Marks: +1, -0

The value of x for which the matrix

[\table x-2,2x-3,3x-4;x-4,2x-9,3x-16;x-8,3x-27,3x-64]

does not possess inverse, is

Solution:

From options when x = 4
The given matrix reduces to

[\table2,5,8;0,-1,-4;4,-19,-52]

whose determinant is zero, hence, inverse does not exists

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