1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

If $$x^3-2 x^2-9 x+18=0$$ and $$A=\left|\begin{array}{lll}1 & 2 & 3 \\ 4 & x & 6 \\ 7 & 8 & 9\end{array}\right|$$ then the maximum value of $$A$$ is

A
96
B
36
C
24
D
120
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

If $$A=\left(\begin{array}{lll}0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0\end{array}\right)$$ then $$A^4$$ is equal to

A
A
B
2A
C
I
D
4A
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

If $$\left(\begin{array}{ll}2 & 1 \\ 3 & 2\end{array}\right) A=\left(\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right)$$ then the matrix $$a$$ is

A
$$\left(\begin{array}{ll}2 & 1 \\ 3 & 2\end{array}\right)$$
B
$$\left(\begin{array}{cc}2 & -1 \\ -3 & 2\end{array}\right)$$
C
$$\left(\begin{array}{cc}-2 & 1 \\ 3 & -2\end{array}\right)$$
D
$$\left(\begin{array}{cc}2 & -1 \\ 3 & 2\end{array}\right)$$
4
KCET 2020
MCQ (Single Correct Answer)
+1
-0

If $$f(x)=\left|\begin{array}{ccc}x^3-x & a+x & b+x \\ x-a & x^2-x & c+x \\ x-b & x-c & 0\end{array}\right|$$, then

A
$$f(\mathrm{l})=0$$
B
$$f(2)=0$$
C
$$f(0)=0$$
D
$$f(-1)=0$$
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EXAM MAP
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Graduate Aptitude Test in Engineering
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Class 12