1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
The system of equations $x + 2y = 3$ and $2x + 3y = 3$ has
A
No solution
B
Unique solution
C
Infinite solutions
D
Only two solutions
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
If A and B are invertible square matrices of order n, then which of the following is not correct?
A
$\det(AB) = \det(A) \cdot \det(B)$
B
$\det(kA) = k^n \det(A)$
C
$\det(A + B) = \det(A) + \det(B)$
D
$\det(A^{-1}) = \dfrac{1}{\det(A)}$
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Which of the following is correct?
A
Determinant is a square matrix
B
Determinant is a number associated to a matrix
C
Determinant is a unique number associated to a square matrix
D
Determinant is not defined for a square matrix
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
The second order derivative of $\cos^{-1}(4x^3 - 3x)$ with respect to $\cos^{-1}(2x^2 - 1)$, where $\dfrac{1}{2} < x < 1$ is
A
$0$
B
$-\dfrac{1}{\sqrt{1 - x^2}}$
C
$\dfrac{3}{2}$
D
$-\dfrac{3}{2}$