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Recent questions tagged engineeringmaths
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Matrices Eigen Values
The value of ‘x’ for which all the eigen values of the matrix given below are real is 10 5+j 4 x 20 2 4 2 10 5+j b. 5j c.15j d.1+5j
asked
Apr 2
in
Mathematical Logic
by
Shivateja MST
(
127
points)

21
views
linearalgebra
engineeringmaths
engineeringmathematics
0
votes
0
answers
GATE GURU: CSE MATHS
Say in GATE instead of 65 questions there are 61 questions from 11 subjects where 10 subjects contain $6$ questions each and the remaining one contain $1$ question only. In how many ways the paper can be set to satisfy this constraint? Ans should be 11 right? as we need have $11\choose1$ ways
asked
Jan 19
in
Mathematical Logic
by
Debapaul
(
699
points)

12
views
engineeringmaths
0
votes
1
answer
Maths Matrices
For the following set of simultaneous equations 1.5x – 0.5y +z =2 4x + 2y + 3z =9 7x + y +5z =10 The solution is unique infinitely many solutions exist the equations are incompatible finite many solutions exist Anyone please clarify.
asked
Jan 1
in
Linear Algebra
by
Shivateja MST
(
127
points)

39
views
discrete_maths
engineeringmaths
discretemaths
0
votes
0
answers
Mathematics Group Theory Abelian Group
If we consider a group (G,*) and consider two elements g and f that belongs to G then how can we define (g * f)^3? Is it like (g * f)(g * f )(g * f)? Anyone please clarify,
asked
Dec 31, 2019
in
Set Theory & Algebra
by
Shivateja MST
(
127
points)

22
views
discrete_maths
groups
engineeringmaths
0
votes
0
answers
MathematicsSyllabus doubt
Is it necessary to read Convergence and Divergence and their related tests of Improper Integrals,Volume of solids of revolution,length of arc of a curve for GATE ? It seems there are no questions in these from past few years. Anyone please clarify.
asked
Dec 27, 2019
in
Calculus
by
Shivateja MST
(
127
points)

20
views
engineeringmaths
discrete_maths
0
votes
0
answers
Discrete Maths
What if I have a function "X" and it's inverse "Y" can I guaranteed say that the function X is bijective? Or in simple terms can I say inverse of a function exists if and only if it's bijective?
asked
Dec 25, 2019
in
Set Theory & Algebra
by
Peter Smith
(
8
points)

25
views
discretemaths
discrete_maths
engineeringmaths
0
votes
0
answers
Onto functions
The number of onto function possible from set A={1,2,3,4,5,6} to set B={a,b,c,d} Such that f(1)=a and f(2) is not b?
asked
Dec 23, 2019
in
Set Theory & Algebra
by
Peter Smith
(
8
points)

15
views
discrete_maths
engineeringmaths
functions
0
votes
0
answers
ACE MATHEMATICS
Let $f(x) = 2x$ and $g(x) = sinx$. The domain and range of the composite function $gof$ is Domain is all real x and range is −1 ≤ y ≤ 1 Domain is all real x and range is −2 ≤ y ≤2 Domain is −1 ≤ y ≤ 1 and range is −1 ≤ y ≤ 1 d. Domain is all positive real values and range is ½ <= x<= ½
asked
Dec 17, 2019
in
Mathematical Logic
by
GAITONDE
(
1.7k
points)

14
views
engineeringmaths
0
votes
0
answers
mathematicsgateee17
Hi Can someone please explain the answer to question in the below link . I am not able to understand it . Thank You https://gateoverflow.in/135069/mathematicsgateee17
asked
Dec 14, 2019
in
Mathematical Logic
by
Pratyush Priyam Kuan
(
804
points)

5
views
selfdoubt
engineeringmaths
0
votes
0
answers
Maths Probability
A Set S has 20 elements.A Subset P of S is selected at random.After inspecting the elements the elements are put back in to S and then a subset Q is selected at random.Then the probability that P and Q are disjoint is _______ (1/3)^20 (1/2)^20 (2/3)^20 (3/4)^20 Anyone please clarify.
asked
Dec 13, 2019
in
Probability
by
Shivateja MST
(
127
points)

21
views
probability
discrete_maths
engineeringmaths
0
votes
0
answers
Graph Theory Complement of Graph
If a Graph G have n vertices and all but one of odd degree,then no. of vertices of odd degree in G’ is ____ Assume G is a simple connected graph. Anyone please clarify.
asked
Dec 2, 2019
in
Graph Theory
by
Shivateja MST
(
127
points)

20
views
graphtheory
engineeringmaths
discrete_maths
0
votes
0
answers
Mathematics Graph Theory doubt
It is given “A complete bipartite graph Km,n is planar iff m<=2 or n<=2” But it has to be m<=2 and n<=2 right? Anyone please clarify.
asked
Nov 30, 2019
in
Graph Theory
by
Shivateja MST
(
127
points)

28
views
graphtheory
engineeringmaths
discrete_maths
0
votes
0
answers
Hamiltonian cycles Graph Theory
Can anyone explain how to identify distinct Hamiltonian edge cycles in a graph with some example? Here distinct implies w.r.t structure or w.r.t order? Suppose if we consider K3, if we consider any order like 1231 or 1321 or 2312 or ... 3123 or 3213. All these have same structures and some are obtained by reversing some of the orders. Please clarify.
asked
Nov 30, 2019
in
Graph Theory
by
Shivateja MST
(
127
points)

15
views
graphtheory
hamiltoniangraph
engineeringmaths
discrete_maths
0
votes
1
answer
Mathematics Graph theory
How many simple graphs are possible with n vertices and m edges (m < C(n,2))? Anyone please clarify.
asked
Nov 29, 2019
in
Graph Theory
by
Shivateja MST
(
127
points)

21
views
graphtheory
engineeringmaths
discrete_maths
0
votes
1
answer
#discrete math
How many simple nonismorphic trees pairwise are possible with 5 vertices
asked
Nov 27, 2019
in
Graph Theory
by
amit166
(
139
points)

16
views
engineeringmaths
0
votes
1
answer
Self doubt on Predicate Logic quantifier position implications
asked
Nov 24, 2019
in
Mathematical Logic
by
tamaldeepmaity
(
17
points)

22
views
predicate_logic
engineeringmaths
discrete_maths
0
votes
1
answer
Mathematics Venn diagram
Of 30 Personal Computers owned by faculty members in a certain university department,20 run windows,eight have 21 inch monitors,25 have CDROM drives.20 have atleast two of these features and 6 have all the three features. How many PC’s have atleast one of these features? How many have none of these features? How many have exactly one feature? Anyone please clarify.
asked
Nov 23, 2019
in
Combinatory
by
Shivateja MST
(
127
points)

45
views
discrete_maths
engineeringmaths
0
votes
1
answer
GF: MATHS 2020
Both $B$ and $D$ are correct, right?
asked
Nov 23, 2019
in
Mathematical Logic
by
Debapaul
(
699
points)

36
views
engineeringmaths
0
votes
0
answers
Propositional and Predicate Logic doubts
Consider P(x):x is a politician and S(x): x is a sportsman In ∀x(P(x) → S(x)) we have all politicians who are sportsman and also we can have others who are non politicians but sportsman,who are non politicians and non sportsman right? Please clarify.
asked
Nov 22, 2019
in
Mathematical Logic
by
Shivateja MST
(
127
points)

21
views
engineeringmaths
propositional_logic
0
votes
0
answers
UEMK GATE MOCK : MATHS
asked
Nov 16, 2019
in
Mathematical Logic
by
Debapaul
(
699
points)

12
views
engineeringmaths
0
votes
0
answers
Engineering Math: Continuity Doubt
Is this function $y=x^{2}$ bounded between $\left [ 1,1 \right ]$? What bounded actually represents?
asked
Nov 12, 2019
in
Mathematical Logic
by
srestha
(
749
points)

10
views
engineeringmaths
engineeringmathematics
0
votes
1
answer
GATE GURU: LA
How to approach these kind of sums? A9 means $A^9$
asked
Nov 10, 2019
in
Linear Algebra
by
Debapaul
(
699
points)

51
views
engineeringmaths
0
votes
0
answers
ACE Test Series: Matrix
If $Adj$ $A=\begin{bmatrix} 18 &11&10 \\ 2 & 14 &4 \\ 4 & 5 & 8 \end{bmatrix}$, then absolute value of determinant of $A$ is __________
asked
Nov 10, 2019
in
Linear Algebra
by
srestha
(
749
points)

21
views
engineeringmaths
0
votes
2
answers
Math book jee
Find value infinite series $1+4/7+9/7^{2}+16/7^{3}+25/7^{4}+.........$
asked
Nov 7, 2019
in
Numerical Ability
by
amit166
(
139
points)

45
views
engineeringmaths
descrete
0
votes
0
answers
ACE Test: Relation
Let $S=\left \{ a,b,c,d \right \}$, and a relation $R$ on $S$ is defined by $R=\left \{ (a,b),(a,c),(a,d),(b,b),(c,a),(d,b),(d,c) \right \}.$ The number of ordered pair in transitive closure of R is ______________ Is $\left ( d,d \right )$ should be transitive closure?
asked
Nov 5, 2019
in
Set Theory & Algebra
by
srestha
(
749
points)

15
views
engineeringmaths
0
votes
1
answer
ACE Test series: Propositional Logic
Which of the following statement is valid? $A)\left \{ \forall \left \{ P\left ( x \right )\vee Q\left ( x \right ) \right \}, \forall x Q\left ( x \right ) \right \}\Rightarrow \exists x P\left ( x \right )$ ... We cannot solve it putting simple logic, We need to use propositional formula here, right?
asked
Nov 5, 2019
in
Mathematical Logic
by
srestha
(
749
points)

28
views
engineeringmaths
0
votes
1
answer
ACE Test: Engineering Math
The maximum number of edges possible in a simple graph with $15$ vertices, and degree of each vertex is atmost $5$ is _______ My ans $55$, using $\frac{\left ( nk \right )\left ( nk+1 \right )}{2}$ and given ans $37$ using $degree\times V\geq 2E$ Which one correct?
asked
Nov 2, 2019
in
Graph Theory
by
srestha
(
749
points)

23
views
engineeringmaths
0
votes
1
answer
CSE GATE GURU: MATHEMATICS
asked
Oct 26, 2019
in
Probability
by
Debapaul
(
699
points)

84
views
engineeringmaths
0
votes
1
answer
GATE 201412 (self modified doubt)
Suppose you break a stick of unit length at a point chosen uniformly at random. Then the expected length of the longer stick is ________ My ans is $0.75$ Is this correct?
asked
Oct 25, 2019
in
Probability
by
Debapaul
(
699
points)

20
views
engineeringmaths
0
votes
1
answer
GATE GURU: GRAPH THEORY
asked
Oct 22, 2019
in
Graph Theory
by
Debapaul
(
699
points)

42
views
engineeringmaths
+1
vote
1
answer
GATE GURU:FUNCTIONS
Can we represent all real numbers by a function? If so, then both are true right?
asked
Oct 21, 2019
in
Set Theory & Algebra
by
Debapaul
(
699
points)

41
views
engineeringmaths
0
votes
0
answers
GATE GURU DISCRETE MATHS
Why is $(II)$ not a poset?
asked
Oct 21, 2019
in
Set Theory & Algebra
by
Debapaul
(
699
points)

26
views
engineeringmaths
+1
vote
1
answer
GATE GURU TEST SERIES: 2019 Discrete Maths
asked
Oct 21, 2019
in
Mathematical Logic
by
Debapaul
(
699
points)

25
views
engineeringmaths
0
votes
1
answer
GATE GURU TEST SERIES MATHS
A cancer institute has a testing methodology. The methodology produces 95% positive result, also 10% rate of falsepositive(i..e showing a non cancer person as a cancer affected patient). If there are 0.5% of the people have cancer. Suppose a person is classified as a disease affected person, what is the probability that the person is really have cancer? _______________
asked
Oct 5, 2019
in
Probability
by
Debapaul
(
699
points)

113
views
engineeringmaths
0
votes
0
answers
GATE GURU TEST SERIES
My ans is 10, but ans given is 500. They have considered the maximum and minimum values, instead of maxima or minima.. who is right?
asked
Oct 4, 2019
in
Mathematical Logic
by
Debapaul
(
699
points)

19
views
engineeringmaths
0
votes
0
answers
Aptitude ,Self doubt
Which digit will be left if we delete odd place numbers from 'n' natural numbers till one digit is left? For e.g. First, we delete 1,3,5 and then 2,4,6 left. Then we del 2,6,10 and so on. I need a direct formula for this problem.
asked
Sep 7, 2019
in
Mathematical Logic
by
rishabhgupta12
(
12
points)

16
views
#aptitude
engineeringmaths
0
votes
2
answers
self doubt  Can we replace
Can we replace bidirectional operator by exnor operator in mathematical logic, when bidirectional operator gives tautology? e.g if there is A <=> B, then can we write it as (~a)(~b) + ab? plzz elaborate
asked
Sep 2, 2019
in
Mathematical Logic
by
Shubhm
(
23
points)

26
views
engineeringmaths
mathematicallogic
0
votes
1
answer
[GATEBOOK TESTSERIES] What is the expectation of the following event?
asked
Aug 30, 2019
in
Probability
by
ummokkate
(
64
points)

19
views
#testseries
engineeringmaths
probability
0
votes
1
answer
Is hypercube graph is another name of regular graph??
asked
Aug 23, 2019
in
Mathematical Logic
by
pawarpiyusha1306
(
7
points)

33
views
engineeringmaths
discrete_maths
graphtheory
0
votes
0
answers
Eigen Value of Symmetric Matrix vs Real Symmetric Matrix
asked
Aug 19, 2019
in
Linear Algebra
by
nadeshseen
(
43
points)

14
views
vectorspaces
engineeringmaths
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