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Recent questions tagged isromech
+1
vote
1
answer
1
engineering mathematics
The minimum value of the function $f(x)=x^3/3x$ occurs at x= 1 x= 1 x= 0 x= $\frac{1}{\sqrt[]{3}}$
asked
Jul 24, 2017
in
Linear Algebra
by
chandu04
(
23
points)

143
views
engineeringmathematics
isromech
+1
vote
1
answer
2
Matrices
Let $\begin{pmatrix} 1 &2 \\ 0 & 1 \end{pmatrix}$,and $B=A+A^{2}+A^{3}+\dots +A^{50}$, then $B^{2}=I$ $B^{2}=0$ $B^{2}=A$ $B^{2}=B$
asked
May 12, 2017
in
Linear Algebra
by
Aspirant
Junior
(
679
points)

355
views
isromech
linearalgebra
matrices
0
votes
2
answers
3
ISRO 2013 Calculus [Mech]
Lim x $\rightarrow$0 $\frac{x^{2}+ x  Sin x}{x^{2}}$ (a) 0 (b) ∞ (c) 1 (d) None of these
asked
Mar 8, 2017
in
Calculus
by
sh!va
Boss
(
32.3k
points)

149
views
engineeringmathematics
isromech
calculus
0
votes
1
answer
4
ISRO 2013 Probability/Leap year [Mech]
Chance that a leap year selected at random will contain 53 Sundays is (a) 3/7 (b) 7/2 (c) 7/3 (d) 2/7
asked
Mar 8, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

281
views
engineeringmathematics
isromech
probability
0
votes
1
answer
5
ISRO 2013 Area under curve [Mech]
Area bounded by the parabola 2y= $x^2$ and the line x = y4 is equal to (a) 4.5 (b) 9 (c) 18 (d) 36
asked
Mar 8, 2017
in
Calculus
by
sh!va
Boss
(
32.3k
points)

516
views
engineeringmathematics
isromech
calculus
0
votes
2
answers
6
ISRO 2013 Probability [Mech]
If the probability for A to fail an examination is 0.2 and that for B is 0.3, then probability that either A of B fail is (a) 0.5 (b) 0.06 (c) 0.44 (d) 0.38
asked
Mar 8, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

514
views
engineeringmathematics
isromech
probability
0
votes
1
answer
7
ISRO 2013 Angle between vectors [Mech]
Vector a= 3i + 2j  6k, vector b= 4i  3j + k, angle between above vectors is (a) 90° (b) 0° (c) 45° (d) 60°
asked
Mar 8, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

168
views
engineeringmathematics
isromech
linearalgebra
+1
vote
2
answers
8
ISRO 2013 Matrices /Mech
Tha matrix $ \begin{bmatrix} 0 & 4 &1 \\ 4& 0 &5 \\ 1&5 &0 \end{bmatrix} $is (a) Orthogonal Matrix (b) Skew Symmetric (c) Symmetric (d) Idempotent
asked
Mar 8, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

655
views
engineeringmathematics
isromech
matrices
linearalgebra
+1
vote
2
answers
9
ISRO 2013  Matrices [Mech]
If A is Square Matrix of order 3, then product of A and its transpose is (a) Unit Matrix (b) Zero Matrix (c) Identity Matrix (d) Symmetric Matrix
asked
Mar 8, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

567
views
engineeringmathematics
isromech
linearalgebra
matrices
0
votes
1
answer
10
ISRO 2013  matrices [Mech]
If A=$\begin{bmatrix} 8 & 5 & \\ 7& 6 & \end{bmatrix}$ then $A^{121}$  $A^{120}$  is: a) 0 b) 1 c) 120 d) 121
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

777
views
engineeringmathematics
isromech
linearalgebra
0
votes
3
answers
11
ISRO 2014 Probability [Mech]
A purse contains 4 copper coins and 3 silver coins. A second purse contains 6 copper coins and 4 silver coins. A purse is chosen randomly and a coin is taken out of it. What is the probability that it is a copper coin? a) 70/82 b) 35/70 c) 41/82 d) 41/70
asked
Mar 7, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

780
views
engineeringmathematics
isromech
probability
0
votes
1
answer
12
ISRO 2014 vector {mech}
Angle made between vector C = 2i 3j+ 4k and the Zaxis is a) 4 /√29 b) $sin^ { 1}$ 4 /√29 c) $cos^ {1}$ 4 /√29 d) $tan ^{1 }$4 /√29
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

86
views
engineeringmathematics
isromech
linearalgebra
+1
vote
1
answer
13
ISRO 2014 Matrices [Mech]
Let M be a 3 x 3 matrix satisfying: Then the sum of the diagonal entries of M is: (a) 9 (b) 12 (c) 6 (d)0
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

589
views
engineeringmathematics
isromech
linearalgebra
matrices
0
votes
1
answer
14
ISRO 2014 Matrices [mech]
Let A= $\begin{bmatrix} 0 &0 & 1\\ 0& 1 & 0\\ 1 &0 & 0 \end{bmatrix}$ The only correct statement about the matrix A is (a) A is a ZERO matrix (b) A2=I (c) A1 does not exist (d) A= (1) I, where I is a Unit matrix
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

138
views
engineeringmathematics
isromech
linearalgebra
0
votes
1
answer
15
ISRO 2015 Conic sections [Mech]
Circular shapes appear in this fashion when viewed at an angle other than 90 degrees (a) Circular (b) Elliptical (c) Lengthened (d) Angular
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

126
views
engineeringmathematics
isromech
linearalgebra
+1
vote
1
answer
16
ISRO 2015 probability [Mech]
The probability that a teacher will give an unannounced test during any class is 1/5. If a student is absent twice, then probability that misses at least one test is (a) 24/25 (b) 16/25 (c) 7/25 (d) 9/25
asked
Mar 7, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

436
views
engineeringmathematics
isromech
probability
0
votes
1
answer
17
ISRO 2015 matrices [Mech]
For which value of x, will the matrix $\begin{bmatrix} 8 &x &0 \\ 4 & 0& 2\\ 12 & 6 & 0 \end{bmatrix}$ become singular ? 12 6 0 (a) 4 (b) 6 (c) 8 (d) 12
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

353
views
engineeringmathematics
isromech
linearalgebra
0
votes
3
answers
18
ISRO 2015 Eigen Values [mech]
$\begin{bmatrix} 4 & 1 \\ 1& 4 \end{bmatrix}$ Eigen values of the matrix are: a) 3,3 b) 3, 5 c) 3, 5 d) 5 ,0
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

236
views
engineeringmathematics
isromech
linearalgebra
eigenvalue
+1
vote
1
answer
19
ISRO 2016 matrices [Mech]
What is the value of a) 2 $a^2$ $b^2$ $c^2$ b) 4 $a^2$ $b^2$ $c^2$ c) 8 $a^2$ $b^2$ $c^2$ d) 0
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

312
views
matrices
engineeringmathematics
isromech
linearalgebra
+1
vote
1
answer
20
ISRO 2016 Probability [Mech]
A and B are two candidates appearing for an interview by a company. The probability that A is selected is 0.5 and the probability that both A and B are selected is at most 0.3. The probability of B getting selected is (a) 0.9 (b) 0.3 (c) 0.6 (d) 0.5
asked
Mar 7, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

361
views
engineeringmathematics
isromech
probability
+1
vote
2
answers
21
ISRO 2016 Number of trials [Mech]
There are 20 locks and 20 matching keys. Maximum number of trials required to match all the locks is (a) 190 (b) 210 (c) 400 (d) 40
asked
Mar 7, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

474
views
engineeringmathematics
isromech
probability
0
votes
1
answer
22
ISRO 2016 Coordinate geometry [Mech]
Equation of the line normal to function f(x)= $(x  8) ^{2/3}$ +1 at P(0, 5) is (a) y = 3x 5 (b) 3y = x  15 (c) 3y = x+15 (d) y=3x+5
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

317
views
engineeringmathematics
isromech
linearalgebra
+1
vote
1
answer
23
ISRO 2016 Vectors [Mech]
The sine of the angle between the two vectors a = 3i + j + k and b = 2i 2j + k is (a) √ (74/99) (b) √ (25/99) (c) √ (37/99) (d) √ (5/99)
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

114
views
engineeringmathematics
isromech
linearalgebra
0
votes
1
answer
24
ISRO 2012 Probability [Mech]
The probability that A happens is 1/3. the odds against happening A are: a) 2:1 b) 3:2 c) 1:2 d) 2:3
asked
Mar 7, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

288
views
engineeringmathematics
isromech
probability
0
votes
1
answer
25
ISRO 2012  [Mech]
In a class of 45 students, the mean mark of 25 girls is 32 and the mean mark of 20 boys is 27.5. What is the class mean? (a) 32 (b) 27.5 (c) 29.75 (d) 30
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

102
views
engineeringmathematics
isromech
linearalgebra
+1
vote
1
answer
26
ISRO 2012: [Mech] Complex Numbers
1+ i Is equivalent to (a) √ 2 $e ^{ i π /4 }$ (b) √ 2 $e^ {i π /4}$ (c) 2 $e^ { i π /4}$ (d) 2 $e^ {i π /4}$
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

89
views
engineeringmathematics
isromech
linearalgebra
0
votes
1
answer
27
ISRO 2012 [Mech] Calculus
The approximate value of y(0.1) from dy/dx = $x^2$y1, y(0) =1 is (a) 0.900 (b) 1.001 (c) 0.802 (d) 0.994
asked
Mar 7, 2017
in
Calculus
by
sh!va
Boss
(
32.3k
points)

195
views
engineeringmathematics
isromech
calculus
+1
vote
2
answers
28
ISRO 2012: [Mech] Probability
Let E and F be any two events with P(E U F)= 0.8, P(E) = 0.4 and P (E/ F) = 0.3. Then P (F) is (a) 3/7 (b) 4/7 (c) 3/5 (d) 2/5
asked
Mar 7, 2017
in
Probability
by
sh!va
Boss
(
32.3k
points)

149
views
engineeringmathematics
isromech
probability
0
votes
0
answers
29
ISRO 2012 Coordinate geometry [Mech]
The equation of the plane through the line $(x1)/3 = (y4)/2= (z4)/2 $ and parallel to the line $ ( x+1)/2 = ( y1)/4= (z+2 )/1 $ is (a)$3x+ 2y  2z$ = $101$ (b)$2x4y+z$ = $98$ (c)$ 6x+ 7y + 16z$ = $98$ (d)$6x8y2z$ = $ 101$
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

88
views
isromech
engineeringmathematics
geometry
0
votes
1
answer
30
ISRO 2012 [Mech] Engineering mathematics Cross product
A x B is a vector (a) Parallel to A, but perpendicular to B (b) Parallel to B, but perpendicular to A. (c) Perpendicular to both A &B (d) Parallel to both A & B
asked
Mar 7, 2017
in
Linear Algebra
by
sh!va
Boss
(
32.3k
points)

104
views
isromech
engineeringmathematics
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