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Recent questions tagged engineeringmathematics
+1
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0
answers
1
Engineering Maths: Orthogonal Matrix
Is the given last point correct? But as i see in the given matrix sum of the product of first two columns (or) two rows is not zero. please verify.
asked
4 days
ago
in
Linear Algebra
by
pbhati
(
35
points)

7
views
linearalgebra
engineeringmathematics
0
votes
0
answers
2
ISI 2014 MMA 9
asked
5 days
ago
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

18
views
userisi2014
usermod
engineeringmathematics
0
votes
0
answers
3
ISI 2014 MMA  3
asked
5 days
ago
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

22
views
userisi2014
usermod
engineeringmathematics
0
votes
0
answers
4
ISI 2014 MMA  5
asked
5 days
ago
in
Calculus
by
Sammohan Ganguly
(
417
points)

49
views
userisi2014
usermod
calculus
engineeringmathematics
0
votes
1
answer
5
ISI 2014 MMA 7
asked
5 days
ago
in
Calculus
by
Sammohan Ganguly
(
417
points)

47
views
userisi2014
usermod
calculus
engineeringmathematics
0
votes
1
answer
6
Definite Integral
S = $\int_{0}^{2\Pi } \sqrt{4cos^{2}t +sin^{2}t} \, \, dt$ Please explain how to solve it.
asked
Jun 11
in
Calculus
by
ankitgupta.1729
Loyal
(
6k
points)

58
views
calculus
integration
engineeringmathematics
integrals
0
votes
0
answers
7
Number of distinct cycles of length 4 in a complete graph of 6 labelled vertices.
asked
Jun 6
in
Graph Theory
by
Ayush Upadhyaya
Loyal
(
8.7k
points)

50
views
graphtheory
engineeringmathematics
0
votes
2
answers
8
Number of Subgraphs of Kn?
I was searching for this question and found below link How many subgraphs does $K_5$ have? Here, in general, it is given to be $\displaystyle\sum_{r=0}^{n}\binom{n}{r}2^{\frac{r(r1)}{2}}$ My doubt is that the case for $r=0$ is taken if we select none of the vertices of $K_n$? Why the case for $ r=0$ considered?
asked
Jun 5
in
Graph Theory
by
Ayush Upadhyaya
Loyal
(
8.7k
points)

38
views
engineeringmathematics
graphtheory
0
votes
2
answers
9
set theory
How many relation possible with $n$ elements of a set which are symmetric but not antisymmetric ?
asked
Jun 5
in
Set Theory & Algebra
by
Pradeep A
(
37
points)

36
views
engineeringmathematics
discretemathematics
settheory&algebra
+1
vote
1
answer
10
Kenneth Rosen Ch:1,Ex:1.5 Qn:52.
Express the quantification $∃!xP (x)$,using universal quantifications, existential quantifications, and logical operators.?
asked
Jun 4
in
Mathematical Logic
by
siva140191
(
63
points)

69
views
discretemathematics
engineeringmathematics
kennethrosen
settheory&algebra
propositionallogic
0
votes
0
answers
11
Gilbert Strang  Real Symmetric Matrices
asked
Jun 2
in
Linear Algebra
by
ankitgupta.1729
Loyal
(
6k
points)

34
views
linearalgebra
gilbertstrang
matrix
engineeringmathematics
0
votes
2
answers
12
Made easy test
Consider the rank of matrix $'A'$ of size $(m \times n)$ is $"m1"$. Then, which of the following is true? $AA^T$ will be invertible. $A$ have $"m1"$ linearly independent rows and $"m1"$ linearly ... and $"n"$ linearly independent columns. $A$ will have $"m1"$ linearly independent rows and $"n1"$ independent columns.
asked
May 31
in
Linear Algebra
by
saumya mishra
Junior
(
905
points)

64
views
engineeringmathematics
linearalgebra
matrices
0
votes
0
answers
13
Made easy test
Consider Ramesh purchase a product of Patanjali. The manual on it states that the lifetime $T$ of product is defined as the amount of time (in years) the product works properly until it breaks down, satisfy following equation : $$P(T \geq t) = e^{t/4}, \text{for all } t \geq 0$$ The probability that it breaks down in $3^{rd}$ year is ______. (Upto $2$ decimal places)
asked
May 31
in
Probability
by
saumya mishra
Junior
(
905
points)

55
views
engineeringmathematics
probability
+1
vote
1
answer
14
Matrix
Each row of M can be represented as a linear combination of the other rows 1)Does that mean linear combination of other rows will be 0? how ? 2)And also , is linear combination means add, subtract, multiply and divide , but not squaring or root or exponential operation,right? https://gateoverflow.in/3319/gate2008it29
asked
May 30
in
Linear Algebra
by
srestha
Veteran
(
86.4k
points)

64
views
linearalgebra
matrices
engineeringmathematics
+1
vote
1
answer
15
Doubts
1. What is the Difference Between Range and Co domain of Function ? 2.If i say a function is one to one , onto , bijection what does it actually tell about the function is there any significance or they are just types of function ? 3. when i say $fog(x ... domain then what's the problem because we can never attain that image because there exist no pre image so how does it effect its range ?
asked
May 30
in
Mathematical Logic
by
Na462
Active
(
3.3k
points)

40
views
engineeringmathematics
discretemathematics
functions
sets
settheory&algebra
+1
vote
1
answer
16
Mathematical logic
Suppose the numbers $1$ to $20$ are placed in any order around a circle . Show that the sum of some three consecutive numbers must be atleast $32$.
asked
May 30
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

33
views
engineeringmathematics
discretemathematics
mathematicallogic
0
votes
1
answer
17
Mathematical logic
Which of the following is(are) not logical implications? p<>q => p>q p^q => p<>q p<> => p>~q p<>~q => p>q
asked
May 30
in
Mathematical Logic
by
Mr khan 3
(
121
points)

33
views
engineeringmathematics
discretemathematics
mathematicallogic
0
votes
1
answer
18
If A and B are matrices of order 4 x 4 such that A= 5B and determinant of A = X. (determinant of B), then X will be
asked
May 30
in
Linear Algebra
by
VIDYADHAR SHELKE 1
(
71
points)

44
views
engineeringmathematics
linearalgebra
0
votes
1
answer
19
Made easy test
Which of the following matrices is LU DECOMPOSIBLE? How to find it? $\begin{bmatrix} 1 & 2 & 3 \\ 2 & 4 & 5 \\ 1 & 3 & 4 \end{bmatrix}$ $\begin{bmatrix} 3 & 2 \\ 0 & 1 \end{bmatrix}$ $\begin{bmatrix} 0 & 1 \\ 3 & 2 \end{bmatrix}$ $\begin{bmatrix} 1 & 3 & 7 \\ 2 & 6 & 1 \\ 0 & 3 & 2 \end{bmatrix}$
asked
May 30
in
Linear Algebra
by
saumya mishra
Junior
(
905
points)

54
views
engineeringmathematics
linearalgebra
+1
vote
1
answer
20
Limit
Puzzle $\lim_{y\rightarrow \alpha }\left (y\left ( y^{2}+y \right )^{\frac{1}{2}}\right )$
asked
May 30
in
Calculus
by
srestha
Veteran
(
86.4k
points)

74
views
limits
calculus
engineeringmathematics
0
votes
0
answers
21
Limits
$\displaystyle\lim_{x \to 0} \left[ \dfrac{log(1+x)}{x} \right] ^{\dfrac{1}{x}} $
asked
May 29
in
Mathematical Logic
by
Nymeria
(
415
points)

55
views
engineeringmathematics
calculus
limits
0
votes
1
answer
22
Combinatorics
Among the integers $1,2,3,....,200$ if $101$ integers are chosen,then show that there are two among the chosen,such that one is divisible by the other.
asked
May 29
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

48
views
engineeringmathematics
discretemathematics
permutationsandcombinations
pigeonholeprinciple
counting
+1
vote
2
answers
23
Mathematical logic
[~p ^ (p>q)]  > ~p is., satisfiable unsatisfiable tautology invalid
asked
May 29
in
Mathematical Logic
by
Mr khan 3
(
121
points)

47
views
engineeringmathematics
discretemathematics
mathematicallogic
+1
vote
2
answers
24
Ace booklet
How many ways $4$ boys and $4$ girls can sit in a row so that no two girl are sitting side by side
asked
May 29
in
Mathematical Logic
by
Rahul singh dhakrey
(
25
points)

64
views
engineeringmathematics
permutationsandcombinations
counting
discretemathematics
0
votes
1
answer
25
Combinatorics
Given m integers $a_1,a_2,....,a_m$ show that there exist integers $k,s$ with $0 \leq k < s \leq m$ such that $a_{k+1} + a_{k+2} + .....+a_s$ is divisible by $m$.
asked
May 29
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

41
views
engineeringmathematics
discretemathematics
permutationsandcombinations
pigeonholeprinciple
counting
0
votes
1
answer
26
Group theory
A homomorphism $f:G$ to $G1$ of groups is a monomorphism iff Ker $f = \{e\}$.
asked
May 29
in
Set Theory & Algebra
by
Sammohan Ganguly
(
417
points)

35
views
engineeringmathematics
discretemathematics
groups
grouphomomorphism
groupmonomorphism
0
votes
1
answer
27
Combinatorics
Show that of any $5$ points chosen within a square of length $2$ there are $2$ whose distance apart is atmost $\sqrt{2}$.
asked
May 28
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

32
views
engineeringmathematics
discretemathematics
permutationsandcombinations
pigeonholeprinciple
0
votes
3
answers
28
Graph theory  Graph Theory
A simple non directed graph contains $21$ edges, $3$ vertices of degree $4$ and the other vertices are of degree $2$.Then the number of vertices in the graph is? $8$ $13$ $18$ $21$
asked
May 28
in
Study Resources
by
Mr khan 3
(
121
points)

41
views
graphtheory
discretemathematics
engineeringmathematics
0
votes
2
answers
29
Rosen page 17
"You can access the Internet from campus only if you are a computer science major or you are not a freshman" According to Rosen, its equivalent compound proposition is a $→ (c ∨¬f )$. Should it not be the other way round? $(c ∨¬f ) → a$
asked
May 28
in
Mathematical Logic
by
Warlock lord
Active
(
3.4k
points)

78
views
kennethrosen
mathematicallogic
engineeringmathematics
discretemathematics
propositionallogic
+1
vote
1
answer
30
Self doubt
In a group of five people one is either a friend or enemy of the others. It is given that no three of them are friends and no three of them are enemies. Prove that every member in that group has exactly two friends
asked
May 28
in
Mathematical Logic
by
Sammohan Ganguly
(
417
points)

28
views
engineeringmathematics
mathematicallogic
discretemathematics
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