1
TS EAMCET 2023 (Online) 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $i$ is the root of the equation $x^2+1=0$, then

$$ (1+\sqrt{3} i)^{2023}+(1-\sqrt{3} i)^{2023}= $$

A

$2^{2022}$

B

$2^{2023}$

C

$2^{2022}(\sqrt{3})$

D

$2^{2023}(\sqrt{3})$

2
TS EAMCET 2023 (Online) 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

One of the values of $(\sqrt{3}-i)^{\frac{1}{6}}$ is

A

$2^{\frac{1}{6}}$ cis $\frac{61 \pi}{36}$

B

$2^{\frac{1}{6}}$ cis $\frac{37 \pi}{36}$

C

$2^{\frac{1}{6}}$ cis $\frac{59 \pi}{36}$

D

$2^{\frac{1}{6}}$ cis $\frac{49 \pi}{36}$

3
TS EAMCET 2023 (Online) 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $x^2+3 x-2 k=0$ and $x^2-2 x-7 k=0$ have a non-zero common root, then the positive root of the equation $k x^2+(k+2) x-(k+1)=0$ is

A

2

B

$\frac{2}{5}$

C

3

D

$\frac{3}{5}$

4
TS EAMCET 2023 (Online) 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The values of $\frac{x^2-2 x+1}{x^2+x-1}$ do not lie in the interval

A

$\left(-\frac{4}{5}, 0\right)$

B

$\left(-\infty,-\frac{4}{5}\right)$

C

$(0, \infty)$

D

$\left(\frac{4}{5}, \infty\right)$

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