1
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$A, C$ are $3 \times 3$ matrices $B, D$ are $3 \times 1$ matrices. If $A X=B$ has unique solution and $C X=D$ has infinite number of solutions, then

A

rank of $[A: D]=\operatorname{rank}$ of $[C: B]$

B

rank of $A=$ rank of $C$

C

rank of $[A: B]<\operatorname{rank}$ of $[B: D]$

D

rank of $[A: D] \geq$ rank of $[C: B]$

2
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$A$ and $B$ are two non-square matrices. If $P=A+B, Q=A^T B, R=A B^T$, then the matrices whose order is equal to the order of $A$ are

A

$P Q$ and $Q R$

B

$R Q$ and $Q P$

C

$P Q$ and $R P$

D

$P Q R$ and $R P Q$

3
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$\omega$ is a complex cube root of unity and $Z$ is a complex number satisfying $|Z-1| \leq 2$. The possible values of $r$ such that $|Z-1| \leq 2$ and $\left|\omega Z-1-\omega^2\right|=r$ have no common solution are

A

$0 \leq r \leq 4$

B

$r=|\omega|$ only

C

$r>4$

D

$1

4
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $|Z|=2, Z_1=\frac{Z}{2} e^{i \alpha}$ and $\theta$ is the $\operatorname{amp}(Z)$, then $\frac{Z_1^n-Z_1^{-n}}{Z_1^n+Z_1^{-n}}=$

A

$2^n i \tan (n \theta+n \alpha)$

B

$i \tan (n \theta-n \alpha)$

C

$i \tan (n \theta+n \alpha)$

D

$\tan (n \theta+n \alpha)$

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