1
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
Let $ [x] $ denote the greatest integer $ \leq x $. If $ f(x)=[x] $ and $ g(x)=|x| $, then the value of $ f\left(g\left(\frac{8}{5}\right)\right)-g\left(f\left(-\frac{8}{5}\right)\right) $ is
A
2
B
-2
C
1
D
-1
2
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1

Let $ f $ be the function defined by

$ f(x)=\left\{\begin{array}{cc} \frac{x^{2}-1}{x^{2}-2|x-1|-1}, & x \neq 1 \\ \frac{1}{2}, & x=1 \end{array}\right. $

A
The function is continuous for all values of $ x $
B
The function is continuous only for $ x > 1 $
C
The function is continuous at $ x=1 $
D
The function is not continuous at $ x=1 $.
3
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
If $ x \sqrt{1+y}+y \sqrt{1+x}=0 $, then $ \frac{d y}{d x}= $
A
$ \frac{x+1}{x} $
B
$ \frac{1}{1+x} $
C
$ \frac{-1}{(1+x)^{2}} $
D
$ \frac{x}{1+x} $
4
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
Consider the function $ f(x)=\frac{|x-1|}{x^{2}} $, then $ f(x) $ is
A
increasing in $ (0,1) \cup(2, \infty) $
B
increasing in $ (-\infty, 0) \cup(0,1) $
C
decreasing in $ (-\infty, 0) \cup(2, \infty) $
D
decreasing in $ (0,1) \cup(2, \infty) $
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