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1
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1
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1
TIFR-2012-Maths-D: 31
True/False Question: $f : \left [ 0,\infty \right ]\rightarrow \left [ 0,\infty \right ]$ is continuous and bounded then $f$ has a fixed point.
soujanyareddy13
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TIFR
Aug 30, 2020
by
soujanyareddy13
712
views
tifrmaths2012
0
votes
1
answer
2
TIFR-2012-Maths-D: 32
True/False Question: The polynomial $X^{8}+1$ is irreducible in $\mathbb{R}\left [ X \right ]$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
294
views
tifrmaths2012
1
vote
1
answer
3
TIFR-2012-Maths-D: 33
True/False Question: The matrix $\begin{pmatrix} 1 & \pi &3 \\ 0& 2&4 \\ 0&0 &3 \end{pmatrix}$ is diagonalisable.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
373
views
tifrmaths2012
1
vote
1
answer
4
TIFR-2012-Maths-D: 34
True/False Question: If a rectangle $R:=\left \{ \left ( x,y \right ) \in \mathbb{R}^{2}\mid A\leq x\leq B,C\leq y\leq D\right \}$ can be covered (allowing overlaps ) by $25$ discs of radius $1$ then it can also be covered by $101$ dics of radius $\frac{1}{2}.$
soujanyareddy13
asked
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TIFR
Aug 30, 2020
by
soujanyareddy13
447
views
tifrmaths2012
0
votes
0
answers
5
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.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
214
views
tifrmaths2012
0
votes
0
answers
6
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 $v_{i},w_{i}\in \mathbb{C}.$
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
225
views
tifrmaths2012
0
votes
0
answers
7
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
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
167
views
tifrmaths2012
0
votes
0
answers
8
TIFR-2012-Maths-D: 38
True/False Question: The graph of $xy=1$ is $\mathbb{C}^{2}$ is connected.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
175
views
tifrmaths2012
0
votes
1
answer
9
TIFR-2012-Maths-D: 39
True/False Question: If $z_{1},z_{2},z_{3},z_{4}\in \mathbb{C}$ satisfy $z_{1}+z_{2}+z_{3}+z_{4}=0$ and $\left | z_{1} \right |^{2}+\left | z_{2} \right |^{2}+\left | z_{3} \right |^{2}+\left | z_{4} \right |^{2}=1$ ... $2$.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
375
views
tifrmaths2012
0
votes
0
answers
10
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
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
197
views
tifrmaths2012
0
votes
0
answers
11
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
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
198
views
tifrmaths2012
0
votes
0
answers
12
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
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
215
views
tifrmaths2012
0
votes
0
answers
13
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
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
203
views
tifrmaths2012
0
votes
0
answers
14
TIFR-2012-Maths-C: 24
True/False Question: The Integral $\int_{-\infty }^{+\infty }\frac{e^{-x}}{1+x^{2}}\:dx$ is convergent.
soujanyareddy13
asked
in
TIFR
Aug 30, 2020
by
soujanyareddy13
178
views
tifrmaths2012
0
votes
0
answers
15
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
0
answers
16
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
204
views
tifrmaths2012
0
votes
0
answers
17
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
18
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
212
views
tifrmaths2012
0
votes
0
answers
19
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
165
views
tifrmaths2012
0
votes
0
answers
20
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
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