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TIFR-2012-Maths-D: 35
True/False Question: Given any integer $n\geq 2$, we can always finds an integer $m$ such that each of the $n-1$ consecutive integers $m+2,m+3,\dots,m+n$ are composite.
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Aug 30, 2020
by
soujanyareddy13
214
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2
TIFR-2012-Maths-D: 36
True/False Question: The $10 \times 10 $ matrix $\begin{pmatrix} v_{1}w_{1} & \cdots&v_{1}w_{10} \\ v_{2}w_{2}& \cdots & v_{2}w_{10}\\ v_{10}w_{1}&\cdots & v_{10}w_{10} \end{pmatrix}$has rank $2$, where $v_{i},w_{i}\in \mathbb{C}.$
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TIFR
Aug 30, 2020
by
soujanyareddy13
225
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tifrmaths2012
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3
TIFR-2012-Maths-D: 37
True/False Question: If every continuous function on $X\subset \mathbb{R}^{2}$ is bounded, then $X$ is compact.
soujanyareddy13
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TIFR
Aug 30, 2020
by
soujanyareddy13
167
views
tifrmaths2012
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4
TIFR-2012-Maths-D: 38
True/False Question: The graph of $xy=1$ is $\mathbb{C}^{2}$ is connected.
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TIFR
Aug 30, 2020
by
soujanyareddy13
175
views
tifrmaths2012
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5
TIFR-2012-Maths-D: 40
True/False Question: Consider the differential equations (with $y$ is a function of $x$) $\begin{matrix} \frac{dy}{dx} & = & y\\ y\left ( 0 \right ) & = & 0 \end{matrix}$ ... $(1)$ has infinitely many solutions but $(2)$ has finite number of solutions.
soujanyareddy13
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TIFR
Aug 30, 2020
by
soujanyareddy13
198
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tifrmaths2012
0
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6
TIFR-2012-Maths-C: 21
True/False Question: Let $f : \mathbb{R}^{2}\rightarrow \mathbb{R}$ be a continuous function. Then the derivative $\frac{\partial ^{2}f}{\partial x\partial y}$ can exist without $\frac{\partial f}{\partial x}$ existing.
soujanyareddy13
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in
TIFR
Aug 30, 2020
by
soujanyareddy13
198
views
tifrmaths2012
0
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7
TIFR-2012-Maths-C: 22
True/False Question: If $f$ is continuous on $\left [ 0,1 \right ]$ and if $\int_{0}^{1}f\left ( x \right )x^{n}dx=0$ for $n=1,2,3,\cdots .$ .Then $\int_{0}^{1}f^{2}\left ( x \right )dx=0.$
soujanyareddy13
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in
TIFR
Aug 30, 2020
by
soujanyareddy13
215
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tifrmaths2012
0
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0
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8
TIFR-2012-Maths-C: 23
True/False Question: Suppose that $f \in \mathfrak{L}^{2} \left ( \mathbb{R} \right )$. Then $f \in \mathfrak{L}^{1} \left ( \mathbb{R} \right )$.
soujanyareddy13
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in
TIFR
Aug 30, 2020
by
soujanyareddy13
203
views
tifrmaths2012
0
votes
0
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9
TIFR-2012-Maths-C: 24
True/False Question: The Integral $\int_{-\infty }^{+\infty }\frac{e^{-x}}{1+x^{2}}\:dx$ is convergent.
soujanyareddy13
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in
TIFR
Aug 30, 2020
by
soujanyareddy13
181
views
tifrmaths2012
0
votes
0
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10
TIFR-2012-Maths-C: 25
True/False Question: If $A\subset \mathbb{R}$ and open then the interior of the closure $\overset{-0}{A}$is $A$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
195
views
tifrmaths2012
0
votes
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11
TIFR-2012-Maths-C: 26
True/False Question: If $f \in C^{\infty }$ and $f^{\left ( k \right )}\left ( 0 \right )=0$ for all integer $k\geq 0$, then $f\equiv 0$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
205
views
tifrmaths2012
0
votes
0
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12
TIFR-2012-Maths-C: 27
True/False Question: Let $f:\left [ 0,1 \right ]\rightarrow \left [ 0,1 \right ]$be continuous then $f$ assumes the value $\int_{0}^{1}f^{2}\left ( t \right )dt$ somewhere in $\left [ 0,1 \right ]$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
172
views
tifrmaths2012
0
votes
0
answers
13
TIFR-2012-Maths-C: 28
True/False Question: Let $f:\mathbb{R}\rightarrow \mathbb{R}$ be a function such that $\underset{h\rightarrow 0}{lim }\:\frac{f\left ( x+h \right )-f\left ( x-h \right )}{h}$ exists for all $x \in \mathbb{R}$. Then $f$ is differentiable in $\mathbb{R}.$
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
213
views
tifrmaths2012
0
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0
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14
TIFR-2012-Maths-C: 29
True/False Question: The functions $f\left ( x \right )=x\left | x \right |$ and $x\left | sin\:x \right |$ are not differentiable at $x=0$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
166
views
tifrmaths2012
0
votes
0
answers
15
TIFR-2012-Maths-C: 30
True/False Question: The composition of two uniformly continuous functions need not always be uniformly continuous.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
180
views
tifrmaths2012
0
votes
0
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16
TIFR-2012-Maths-B: 14
True/False Question: $A\in M_{2}\left ( \mathbb{C} \right )$and $A$ is nilpotent then $A^{2}=0$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
211
views
tifrmaths2012
0
votes
0
answers
17
TIFR-2012-Maths-B: 15
True/False Question: Let $P$ be an $n \times n $ matrix whose row sums equal $1$. Then for any positive integer $m$ the row sums of the matrix $p^{m}$ equal $1$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
180
views
tifrmaths2012
0
votes
0
answers
18
TIFR-2012-Maths-B: 16
True/False Question: There is a non trivial group homomorphism from $C$ to $R$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
162
views
tifrmaths2012
0
votes
0
answers
19
TIFR-2012-Maths-B: 18
True/False Question: Any $3\times3$ and $5\times5$ skew-symmetric matrices have always zero determinants.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
192
views
tifrmaths2012
1
vote
0
answers
20
TIFR-2012-Maths-B: 19
True/False Question: The rank of the matrix $\begin{bmatrix} 11 &12 &13 &14 \\ 21& 22 &23 & 24\\ 31& 32 &33 &34 \\ 41&42 & 43 & 44 \end{bmatrix}$ is $2$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
452
views
tifrmaths2012
0
votes
0
answers
21
TIFR-2012-Maths-B: 20
True/False Question: The number $2$ is a prime in $\mathbb{Z}\left [ i \right ]$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
171
views
tifrmaths2012
0
votes
0
answers
22
TIFR-2012-Maths-A: 2
True/False Question: There exist polynomials $f\left ( x \right )$ and $g\left ( x \right )$, with complex coefficients, such that $\left ( \frac{f\left ( x \right )}{g\left ( x \right )} \right )^{2}=x$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
141
views
tifrmaths2012
0
votes
0
answers
23
TIFR-2012-Maths-A: 3
True/False Question: Let $f$ be real valued, differentiable on $\left ( a,b \right )$ and ${f}'\left ( x \right )\neq 0$ for all $x \in \left ( a,b \right )$. Then $f$ is $1-1$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
157
views
tifrmaths2012
0
votes
0
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24
TIFR-2012-Maths-A: 4
True/False Question: The inequality $\sum _{n=0}^{\infty }\frac{\left ( log \: log2 \right )^{n}}{n!}> \frac{3}{5}$ holds.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
169
views
tifrmaths2012
0
votes
0
answers
25
TIFR-2012-Maths-A: 5
True/False Question: Every subgroup of order $74$ in a group of order $148$ is normal.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
160
views
tifrmaths2012
0
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0
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26
TIFR-2012-Maths-A: 6
True/False Question: Let $u_{1},u_{2},u_{3},u_{4}$ be vectors in $\mathbb{R}^{2}$ and $u=\sum_{j=1}^{4}t_{i}u_{j}\:\:\: ; \:\:\:t_{j}> 0 \:\: and \sum_{j=1}^{4}t_{j}=1.$ Then three vectors $v_{1},v_{2},v_{3}\in \mathbb{R}^{2}$may be chosen from $\left \{ u_{1},u_{2},u_{3},u_{4} \right \}$ such that $u=\sum_{j=1}^{3}s_{i}v_{j}, \:\:\:s_{j}\geq 0 ,\:\: \sum_{j=1}^{3}s_{j}=1.$
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
179
views
tifrmaths2012
0
votes
0
answers
27
TIFR-2012-Maths-A: 7
True/False Question: The inequality $\sqrt{1+x}< 1+x/2$ for $x\in \left ( -1, 10 \right )$is true
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
143
views
tifrmaths2012
0
votes
0
answers
28
TIFR-2012-Maths-A: 8
True/False Question: If $n$ is not a multiple of $23$ then the remainder when $n^{11}$ is divided by $23$ is $\pm 1$( mod $23$).
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
155
views
tifrmaths2012
0
votes
0
answers
29
TIFR-2012-Maths-A: 9
True/False Question: Suppose $A$ is a nilpotent matrix and $I$ is the identity matrix. Then $\left ( I+A \right )$ is invertible.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
114
views
tifrmaths2012
0
votes
0
answers
30
TIFR-2012-Maths-A: 10
True/False Question: The equations $x_{1}+\frac{1}{2}x_{2}+\frac{1}{3}x_{3}=1$ $x_{1}+\frac{1}{4}x_{2}+\frac{1}{9}x_{3}=1$ $x_{1}+\frac{1}{8}x_{2}+\frac{1}{27}x_{3}=1$ has no solution.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
124
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tifrmaths2012
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