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

If the function $f: R \rightarrow R$ is defined by

$$ f(x)= \begin{cases}2 x-3, & \text { if } x<-2 \\ x^2-1, & \text { if }-2 \leq x \leq 2 \\ 3 x+2, & \text { if } x>2\end{cases} $$

then $f$ is

A

an injection but not a surjection

B

a surjection but not an injection

C

a bijection

D

Neither injection 'nor surjection

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

The domain of the real valued function

$$ f(x)=\frac{\sqrt{\log _{10}\left(\frac{x}{x-2}\right)}}{\sqrt{[x]^2-5[x]+6}} \text { is } $$

(Here, $[x]$ denotes the greatest integer function)

A

$(-\infty, 0] \cup[2, \infty)$

B

$[2, \infty)$

C

$(-\infty, 2] \cup[4, \infty)$

D

$[4, \infty)$

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

The range of the real valued function $f(x)=\frac{1}{x-|x|}$ is

A

$(0, \infty)$

B

$(-\infty, 0)$

C

$(-\infty, 0) \cup(0, \infty)$

D

$(-\infty, \infty)$

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

If $A=\left[\begin{array}{ccc}1 & 2 & -1 \\ -1 & 0 & 2 \\ 1 & 2 & 0\end{array}\right]$ and $B=\left[\begin{array}{ccc}-3 & -2 & 4 \\ 2 & 2 & -1 \\ -2 & 0 & 3\end{array}\right]$, then $A^2=$

A

$A-B$

B

$B-A$

C

$A+B$

D

$B^2$

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