DeterminantHard

Question

If the adjoint of a 3 × 3 matrix P is , then the possible value(s) of the determinant of P is (are)

Options

A.- 2
B.- 1
C.1
D.2

Solution

|Adj P| = |P|2 as (|Adj (P)| = |P|n-1)
Since |Adj P| = 1 (3 - 7) - 4 (6 - 7) + 4 (2 - 1)
= 4
|P| = 2 or - 2.

Create a free account to view solution

View Solution Free
Topic: Determinant·Practice all Determinant questions

More Determinant Questions

The parameter, on which the value of the determinant does not depend upon, is...If A + B + C = π , then equals -...Identify the correct statement(s)...The value of is -...If f(x) = log10x and g(x) = eipx and h(x) = , then the value of h(10) is...