A.’NN’cannot be written as a denumerable union of
denumerable disjoint sets
B.’NN’ is well ordered
C.’NN’ is a closed subset of ‘RR’
D.None of these
Ans:A
62.E={p’in’’QQ’:2<’p^(2)’<3}.Then which is
false?
A.E is open in ‘QQ’
B.E is closed in ‘QQ’
C.E is a bounded subset of ‘QQ’
D.E is a compact subset of ‘QQ’
Ans:D
63.Let function n(x)={(n-1)x raise to n, if x is
rational(first row),1-(n-1)x raise to n,if x is irrational(second row).Then
which of the following function is discontinuous everywhere on [0,1]?
A.’g_(1)’
B.’g_(2)’
C.’g_(3)’
D.All of these
Ans:A
64.Let f(x)={ x+x raise to 2 sin 1/x,if x not equal
to 0(first row),0 if x=0(second row)
The f’(0) is
A.0
B.1
C.2
D.Does not exists
Ans:B
65.Which of the following is not uniformly
continuous on ‘RR’?
A.x
B.sin x
C.x sin x
D.’(1)/(1+x^(2))’
Ans:C
66.Let ‘s_(n)’=’1/1^(2)+1/2^(2)+….+1/(n^(2))’.Then
which is false?
A.{‘s_(n)’} is a sequence in ‘QQ’
B.{‘s_(n)’} is a Cauchy sequency in ‘QQ’
C.{‘s_(n)’} is convergent in ‘QQ’
D.None of these
Ans:C
67.Let ‘f_(n)’:’RR’’->’’RR’ defined by fn(x)={0
if x elements of (- infinity,n)(first row),n,if x elements of [n,infinity)
Then choose the most correct answer
A.’{f_(n)}’ does not convergent on ‘RR’
B.’{f_(n)}’ converges to zero function on ‘RR’
C.’{‘f_(n)’}converges to zero function on ‘RR’
uniformly
D.None of these
Ans:B
68.Which is false?
A.There exists a function f:’RR’’->’’RR’ which is
continuous exactly at one point
B.There exists a function f:’RR’’->RR’ which is
differentiable exactly at one point
C.There exists a function f:’RR’’->’’RR’ which is
discontinuous everywhere
D.None of these
Ans:D
69.Which of the following subset of ‘RR^(3)’has
positive Lebesgue measure?
70.If ‘int_(1)^(00)’f(x) dx=L where
0<L<’oo’;then ‘lim_(x->oo)’f(x)is
A.0
B.’oo’’’
C.Always exists
D.Need not exists
Ans:D
71.Which is false?
A.cos z=5 has a solution in ‘CC’
B.sin z is a polynomial in ‘CC’
C.’sin ^(z)’+’cos z^(2)’=1 for all z ‘in’’CC’
D.Every non constant polynomial in ‘CC’[x] has a
zero in ‘CC’
Ans:B
72.The image of the line y=1 under the mapping w=sin
z is
A.Parabola
B.Ellipse
C.Rectangular Hyperbola
D.None of these
Ans:B
73.The value of ‘’’int_(C)’’(1)/(z^(3)(z+1)’ dz
where C is |z|=3;is
A.2’pi’i
B.-4’pi’i
C.4’pi’i
D.0
Ans:D
74.Consider the metric space (‘NN’,d)where d is
given by d(m,n)=|’1/m’-‘1/n’|.Then which is false?
A.d is a bounded metric on ‘NN’
B.d induces the discrete topology on ‘NN’
C.’{1/n}’ converges to 0
D.This space is Hausdorff
Ans:C
75.Which is not a productive property?
A.Connectedness
B.Compactness
C.Locally connectedness
D.Path connectedness
Ans:C
76.Let X=(0,1) and Y=’RR’.Then which is true?
A.X and Y are the same as metric spaces
B.X and Y are the same as topological spaces
C.Both (a) and (b)
D.Neither (a) nor(b)
Ans:B
77.Which of the following topological property is
not preserved under a continuous function?
A.Connectedness
B.Compactness
C.First countability
D.None of these
Ans:C
78.Which is true?
A.On’RR’co-finite topology is weaker than usual
topology
B.On’RR’usual topology is weaker than co-finite
topology
C.On’RR’ co-finite topology and usual topology are
not comparable
D.On’RR’co-finite topology and usual topology are
the same
Ans:A
79.If every closed interval[a,b] with a<b is open
with respect to some topology on’RR’;then with respect to this topology,closure
of [27,37]is
A.[27,37]
B.(-‘oo’,37]
C.[27,’oo’)
D.’RR’
Ans:A
80.For the space ‘RR’with co-countable
topology,which is false?
A.Uniqueness of limits exists in this space for the
convergence of sequences
B.This space is not Hausdorff
C.{‘1/n’} is divergent in this space’’
D.None of these
Ans:D
81.If f:’RR’’->’’RR’ is a twice differentiable
function with ‘lim_(x->oo)’(2f(x)+3f’(x))=0 with
‘lim_(x->oo)’f(x)=’lim_(x->oo)’f’(x)=1;then ‘lim_(x->oo)’f’’(x)is
A.0
B.1
C.10
D.11
Ans:D
82.The third approximation ‘y_(3)’(x) for the
I.V.P.,y’=2x(1+y);y(0)=0 by Pickard’s method is
A.’x’+’x^(2)/2’+’x^(3)/6’
B.’x^(2)’+’x^(4)/2’+’x^(6)/6’
C.’x’+’x^(2)/2+x^(8)/6’
D.None of these
Ans:B
83.Consider the vector space V={f:’RR’’->’’RR’
such that f’’-2f’+f=0 over ‘RR’.Then which of the following is a basis for V?
A.{‘e^(t)’}
B.{‘e^(t),te^(t)’}
C.{e^(-t)’}
D.None of these
Ans:B
84.If F(a,b,c,x) is the hyper geometric series,then
‘lim_(b->oo)’F(a,b,a,’x/b’)is
A.’(1+x)^(a)’
B.log(1+x)
C.’e^(x)’
D.sin x
Ans:C
85.If ‘P_(n)(x)’ is the Legendre Polynomial ,then
‘P_(n)(-1)’is
A.1
B.-1
C.’(-1)^(n)’
D.0
Ans:C
86.The equation ‘U_(xxxx_)+x^(2)U_(yy)’=0 is
A.Elliptic
B.Parabolic
C.Hyperbolic
D.None of these
Ans:A
87.If a,b,c are three constants such that
‘U_(x)’=a,’U_(y)’=b and ‘U_(z)’=c with u(x,y,z)=0 at (0,0,0); then U(1,0,0)is
A.a
B.b
C.c
D.None of these
Ans:A
88.If 0<s<1,then ‘int_0^oo(x^(s-1))/(1+x)dx’is
A.’beta’(1,s)
B.’beta’(1-s,1)
C.’beta’(1-s,s)
D.Divergent
Ans:C
89.The Laplace transform L{‘(sin omegat)/(t)’} is
A.’cot^(-1)((s)/(w))’
B.’(omega)/(s^(2)+omega^(2))’
C.’(s)/(s^(2)+omega^(2))’
D.None of these
Ans:A
90.Which of the following is a periodic function on
‘RR’?
A.x-[x]
B.x
C.[x]
D.none of these
Ans:A
91.A velocity field is given by q( raist to
bar)=xi+(y+t)j.Then the stream line for this field at t=2 is
A.Circle
B.Ellipse
C.Hyperbola
D.Rectangular hyperbola
Ans:D
92.Consider the fuzzy sets A and B on X=[0,’(pi)/(2)’]where
A(x)=sin x and B(x)=cos x.Then o.8-cut of A’nn’B is
A.’Phi’
B.X
C.An uncountable subset of X
D.A denumerable subset of X
Ans:A
93.Which is false about the Cantor set?
A.Cantor set is perfect
B.Cantor set is compact
C.Cantor set is fractal
D.Cantor set is an uncountable set with positive
Lebesgue measure
Ans:D
94.The Voltra integral equation corresponding to the
differential equation y”+xy=1,y(0)=y’(0)=0 is
A.’y(x)’=’(x^(2))/(2)’-‘int_0^xty(t)dt’
B.’y(x)=x^(2)/2’-‘int_0^x(x-t)y(t)dt’
C.’y(x)=(x^(2))/(2)-‘int _0^(x)(x-t)ty(t)dt’
D.’y(x)=(x)/(2)’-‘int_0^x(x-t)ty(t)dt’
Ans:C
95.The derivative of the Weierstrass function is
A.Elliptic
B.Even
C.Pole of order 2
D.All the above
Ans:A
96.The function ‘zeta’ (z)is
A.Weierstrass (z)
B.Weierstrass raise to 1(z)
C.-Weierstrass raise to 1(z)
D.Weierstrass (z)
Ans:D
97.For the Euler’s gamma function symbol(z)symbol(1-z)is
A.’(pi)/(cospiz)’
B.’(pi)/(sinpiz)’
C.’(pi)/(cotpiz)’
D.None of these
Ans:B
98.Which of the following is not a maximal geodesic
for the cylinder ‘x_(1)^(2)’+’x_(2)^(2)’=1 in ‘RR^(3)’?
A.Vertical line
B.Horizontal circle
C.Helix
D.None of these
Ans:D
99.Which of the following linear transformation is a
possible Weingarten map for the unit n-sphere ‘x_(1)^(2)+’’x_(2)^(2)’+’x_(3)^(2)’=1
in ‘RR^(3)’ oriented by its inward unit normal?
A.Traise to
x bar=0
B.T raise to x bar=x bar
C.T raise to x bar=2 x bar
D.T raise to x bar=3 x bar
Ans:B
100.Which of the following is reducible over ‘RR’?
A.’x^(2)’+1
B.’x^(2)’+2
C.’x^(5)’+’x^(3)+’’x^(2)’+x+1
D.None of these
Ans:C
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Look at a day when you are supremely satisfied at the end.It is not a day when you lounge around doing nothing.It's when you have had everything to do and you have done it.-Margaret Thatcher
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Look at a day when you are supremely satisfied at the end.It is not a day when you lounge around doing nothing.It's when you have had everything to do and you have done it.-Margaret Thatcher
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