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151
TIFR Mathematics 2024 | Part A | Question: 2
Let $n$ be a positive integer, and let \[ S=\{g \in \mathbb{R}[x] \mid g \text { is a polynomial of degree at most } n\}. \] For $g \in S$, let $A_{g}=\left\{x \in \mathbb{R} \mid e^{x}=g(x)\right\} \subset \mathbb{R}$. Let \[ m=\min \left\{\# A_{g} \mid ... \left\{\# A_{g} \mid g \in S\right\} . \] Then $m=0, M=n$ $m=0, M=n+1$ $m=1, M=n$ $m=1, M=n+1$
admin
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Jan 19
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152
TIFR Mathematics 2024 | Part A | Question: 3
Let $V, W$ be nonzero finite dimensional vector spaces over $\mathbb{C}$. Let $m$ be the dimension of the space of $\mathbb{C}$-linear transformations $V \rightarrow W$, viewed as a real vector space. Let $n$ ... transformations $V \rightarrow W$, viewed as a real vector space. Then $n=m$ $2 n=m$ $n=2 m$ $4 n=m$
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Jan 19
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admin
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153
TIFR Mathematics 2024 | Part A | Question: 4
Consider the real vector space of infinite sequences of real numbers \[ S=\left\{\left(a_{0}, a_{1}, a_{2}, \ldots\right) \mid a_{k} \in \mathbb{R}, k=0,1,2, \ldots\right\} . \] Let $W$ be the subspace of $S$ ... 2}=2 a_{k+1}+a_{k}, \quad k=0,1,2, \ldots \] What is the dimension of $W$ ? $1$ $2$ $3$ $\infty$
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Jan 19
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154
TIFR Mathematics 2024 | Part A | Question: 5
Let $f:[0, \infty) \rightarrow \mathbb{R}$ be a continuous function. If \[ \lim _{n \rightarrow \infty} \int_{0}^{1} f(x+n) d x=2, \] then which of the following statements about the limit \[ \lim _{n \rightarrow \infty} ... equals $0$ The limit exists and equals $\frac{1}{2}$ The limit exists and equals $2$ None of the remaining three options is correct
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Jan 19
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155
TIFR Mathematics 2024 | Part A | Question: 6
Let $f: \mathbb{R} \rightarrow[0, \infty)$ be a function such that for any finite set $E \subset \mathbb{R}$ we have \[ \sum_{x \in E} f(x) \leq 1 . \] Let \[ C_{f}=\{x \in \mathbb{R} \mid f(x)>0\} \subset \mathbb{R} . \] Then $C_{f}$ is finite $C_{f}$ is a bounded subset of $\mathbb{R}$ $C_{f}$ has at most one limit point $C_{f}$ is a countable set
admin
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Jan 19
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admin
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156
TIFR Mathematics 2024 | Part A | Question: 7
Let $p$ be a prime. Which of the following statements is true? There exists a noncommutative ring with exactly $p$ elements There exists a noncommutative ring with exactly $p^{2}$ elements There exists a noncommutative ring with exactly $p^{3}$ elements None of the remaining three statements is correct
admin
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Jan 19
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admin
57
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157
TIFR Mathematics 2024 | Part A | Question: 8
Consider the sequence $\left\{a_{n}\right\}$ for $n \geq 1$ ... $\lim _{n \rightarrow \infty} n^{2} a_{n}$ exists and equals 1
admin
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Jan 19
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admin
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tifrmaths2024
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158
TIFR Mathematics 2024 | Part A | Question: 9
Let $f: \mathbb{R} \rightarrow \mathbb{R}$ be a differentiable function that is a solution to the ordinary differential equation \[ f^{\prime}(t)=\sin ^{2}(f(t))(\forall t \in \mathbb{R}), \quad f(0)=1 . \] ... is neither bounded nor periodic $f$ is bounded and periodic $f$ is bounded, but not periodic None of the remaining three statements is correct
admin
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Jan 19
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admin
58
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tifrmaths2024
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159
TIFR Mathematics 2024 | Part A | Question: 10
Let $B$ denote the set of invertible upper triangular $2 \times 2$ matrices with entries in $\mathbb{C}$, viewed as a group under matrix multiplication. Which of the following subgroups of $B$ is the normalizer of itself in $\text{B}$ ...
admin
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Jan 19
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admin
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tifrmaths2024
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160
TIFR Mathematics 2024 | Part A | Question: 11
What is the least positive integer $n>1$ such that $x^{n}$ and $x$ are conjugate, for every $x \in S_{11}$? Here, $S_{11}$ denotes the symmetric group on $11$ letters. $10$ $11$ $12$ $13$
admin
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Jan 19
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admin
59
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tifrmaths2024
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161
TIFR Mathematics 2024 | Part A | Question: 12
Consider the following statements: $\text{(A)}$ Let $G$ be a group and let $H \subset G$ be a subgroup of index 2 . Then $[G, G] \subseteq H$. $\text{(B)}$ Let $G$ be a group and let $H \subset G$ be a subgroup that contains the commutator subgroup ... false $\text{(A)}$ is true and $\text{(B)}$ is false $\text{(A)}$ is false and $\text{(B)}$ is true
admin
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Jan 19
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admin
64
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162
TIFR Mathematics 2024 | Part A | Question: 13
For any symmetric real matrix $A$, let $\lambda(A)$ denote the largest eigenvalue of $A$. Let $S$ be the set of positive definite symmetric $3 \times 3$ real matrices. Which of the following assertions is correct? There exist $A, B \in S$ ... $\lambda(A+B)=\max (\lambda(A), \lambda(B))$ None of the remaining three assertions is correct
admin
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Jan 19
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admin
66
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163
TIFR Mathematics 2024 | Part A | Question: 14
Let $\theta \in(0, \pi / 2)$. Let $T: \mathbb{R}^{2} \rightarrow \mathbb{R}^{2}$ be the linear map which sends a vector $v$ to its reflection with respect to the line through $(0,0)$ and $(\cos \theta, \sin \theta)$. Then the ... $\left(\begin{array}{cc}\cos \theta & \sin \theta \\ -\sin \theta & \cos \theta\end{array}\right)$
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Jan 19
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admin
59
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164
TIFR Mathematics 2024 | Part A | Question: 15
For a polynomial $f(x, y) \in \mathbb{R}[x, y]$, let $X_{f}=\left\{(a, b) \in \mathbb{R}^{2} \mid f(a, b)=1\right\} \subset \mathbb{R}^{2}$. Which of the following statements is correct? If $f(x, y)=x^{2}+4 x y+3 y^{2}$, ... then $X_{f}$ is compact If $f(x, y)=x^{2}-4 x y-y^{2}$, then $X_{f}$ is compact None of the remaining three statements is correct
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Jan 19
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admin
65
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165
TIFR Mathematics 2024 | Part A | Question: 16
What is the number of distinct subfields of $\mathbb{C}$ isomorphic to $\mathbb{Q}[\sqrt[3]{2}]$? $1$ $2$ $3$ Infinite
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Jan 19
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admin
65
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166
TIFR Mathematics 2024 | Part A | Question: 17
Let $\mathbb{F}_{3}$ denote the finite field with 3 elements. What is the number of one dimensional vector subspaces of the vector space $\mathbb{F}_{3}^{5}$ over $\mathbb{F}_{3}$? $5$ $121$ $81$ None of the remaining three options
admin
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Jan 19
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admin
71
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167
TIFR Mathematics 2024 | Part A | Question: 18
For a positive integer $n$, let $a_{n}, b_{n}, c_{n}, d_{n}$ be the real numbers such that \[ \left(\begin{array}{ll} 1 & 1 \\ 1 & 0 \end{array}\right)^{n}=\left(\begin{array}{ll} a_{n} & b_{n} \\ c_{n} & ... the following numbers equals $\lim _{n \rightarrow \infty} a_{n} / b_{n}$ ? $1$ $e$ $3 / 2$ None of the remaining three options
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Jan 19
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admin
68
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168
TIFR Mathematics 2024 | Part A | Question: 19
Consider the complex vector space $V=\{f \in \mathbb{C}[x] \mid f$ has degree at most 50 , and $f(i x)=-f(x)$ for all $x \in \mathbb{C}\}$. Then the dimension of $V$ equals $50$ $25$ $13$ $47$
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Jan 19
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90
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169
TIFR Mathematics 2024 | Part A | Question: 20
Let $S$ denote the set of sequences $a=\left(a_{1}, a_{2}, \ldots\right)$ of real numbers such that $a_{k}$ equals 0 or 1 for each $k$. Then the function $f: S \rightarrow \mathbb{R}$ defined by \[ f\left(\ ... }}{10}+\frac{a_{2}}{10^{2}}+\ldots \] is injective but not surjective surjective but not injective bijective neither injective nor surjective
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Jan 19
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170
#self doubt
Can someone please explain how to calculate TLB size?
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Madeeasy test 45, question 48
Can anyone please explain the statements II and III?
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Byjus Mock Test
I am unable to understand the language of the question , can someone help me??
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HEY ,Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. Apache/2.4.41 (Ubuntu) Server at aptitude.gateoverflow.in Port 443
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madeeasy
Proof for 2nd equality?
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Theory of Computation
Jan 15
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nihal_chourasiya
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madeeasy
Proof for 2nd equality?
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Made easy
In it’s solution how are they obtaining x with the given operation? Should we not have 1 more register to keep x separate?
Mrityudoot
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Jan 14
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Mrityudoot
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177
TIFR CSE 2024 | Part B | Question: 1
Consider the following three functions defined for all positive integers $n \geq 0$ ... . Only $\text{(ii)}$ and $\text{(iii)}$ are true All of $\text{(i), (ii)}$, and $\text{(iii)}$ are true.
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Algorithms
Jan 13
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admin
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tifr2024
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asymptotic-notation
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178
TIFR CSE 2024 | Part B | Question: 6
The four nucleotides in $\text{DNA}$ are called $\text{A, C, G}$, and $\text{T}$. Consider the following languages over the alphabet $\{\mathrm{A}, \mathrm{C}, \mathrm{G}$, and $\mathrm{T}\}$. \[ \begin{array}{l} L_{1}=\left\{(\mathrm{AC})^{n}(\mathrm{GT})^{n} ... $L_{1}$ and $L_{3} \cdot$ Only $L_{1}$ and $L_{2}$. All three of $L_{1}, L_{2}, L_{3}$.
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Jan 13
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admin
93
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tifr2024
0
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179
TIFR CSE 2024 | Part B | Question: 7
Consider the following algorithm that takes as input a positive integer $n$. if (n == 1) { return "Neither prime nor composite." } m=2 while (m < n) { if (m divides n ){ return "Composite." } m=m+1 } return "Prime. ... at most $\left\lceil n^{1 / 9}\right\rceil$ times only if $p, q, r$ are distinct primes or distinct prime powers.
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Jan 13
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80
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tifr2024
0
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180
TIFR CSE 2024 | Part B | Question: 8
In the following pseudocode, assume that for any pair of integers $x \leq y$, the function random ( $\mathrm{x}, \mathrm{y})$ produces an integer uniformly chosen from the set $\{x, x+1, \ldots, y\}$. n=9 for (i=1 to ... equal probability, and does not print any other output. The output is always $987654321$. The output may not be a permutation of $123456789$.
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Jan 13
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