1
JEE Main 2024 (Online) 31st January Evening Shift
MCQ (Single Correct Answer)
+4
-1

Consider the function $$f:(0, \infty) \rightarrow \mathbb{R}$$ defined by $$f(x)=e^{-\left|\log _e x\right|}$$. If $$m$$ and $$n$$ be respectively the number of points at which $$f$$ is not continuous and $$f$$ is not differentiable, then $$m+n$$ is

A
0
B
1
C
2
D
3
2
JEE Main 2024 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1

$$\lim _\limits{x \rightarrow 0} \frac{e^{2|\sin x|}-2|\sin x|-1}{x^2}$$

A
is equal to 1
B
does not exist
C
is equal to $$-1$$
D
is equal to 2
3
JEE Main 2024 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1

Let $$g(x)$$ be a linear function and $$f(x)=\left\{\begin{array}{cl}g(x) & , x \leq 0 \\ \left(\frac{1+x}{2+x}\right)^{\frac{1}{x}} & , x>0\end{array}\right.$$, is continuous at $$x=0$$. If $$f^{\prime}(1)=f(-1)$$, then the value $$g(3)$$ is

A
$$\log _e\left(\frac{4}{9}\right)-1$$
B
$$\frac{1}{3} \log _e\left(\frac{4}{9 e^{1 / 3}}\right)$$
C
$$\log _e\left(\frac{4}{9 e^{1 / 3}}\right)$$
D
$$\frac{1}{3} \log _e\left(\frac{4}{9}\right)+1$$
4
JEE Main 2024 (Online) 27th January Evening Shift
MCQ (Single Correct Answer)
+4
-1

Consider the function $$f:(0,2) \rightarrow \mathbf{R}$$ defined by $$f(x)=\frac{x}{2}+\frac{2}{x}$$ and the function $$g(x)$$ defined by

$$g(x)=\left\{\begin{array}{ll} \min \lfloor f(t)\}, & 0<\mathrm{t} \leq x \text { and } 0 < x \leq 1 \\ \frac{3}{2}+x, & 1 < x < 2 \end{array} .\right. \text { Then, }$$

A
$$g$$ is continuous but not differentiable at $$x=1$$
B
$$g$$ is continuous and differentiable for all $$x \in(0,2)$$
C
$$g$$ is not continuous for all $$x \in(0,2)$$
D
$$g$$ is neither continuous nor differentiable at $$x=1$$
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