1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The domain of the function $$f: R \rightarrow R$$ defined by $$f(x)=\sqrt{x^2-7 x+12}$$ is

A
$$(-\infty, 3] \cap[4, \infty)$$
B
$$(-\infty, 3] \cup[4, \infty)$$
C
$$(3,4)$$
D
$$(-\infty, 3] \cup(4, \infty)$$
2
KCET 2018
MCQ (Single Correct Answer)
+1
-0
If $|x+5| \geq 10$, then
A
$x \in(-15,5]$
B
$x \in(-5,5]$
C
$x \in(-\infty,-15] \cup[5, \infty)$
D
$x \in[-\infty,-15] \cup[5, \infty)$
3
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Let $f(x)=x-\frac{1}{x}$, then $f(-1)$ is
A
0
B
2
C
1
D
-2
4
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Let $f, g: R \rightarrow R$ be two functions defined as $f(x)=|x|+x$ and $g(x)=|x|-x \forall x \in R$. Then $(f \circ g)(x)$ for $x<0$ is
A
0
B
$4 x$
C
$-4 x$
D
$2 x$
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