Recent questions and answers in Engineering Mathematics

+1 vote

1 answer

1

virtual gate test
just explain the second statement

answered 5 hours ago in Graph Theory by Mk Utkarsh Boss (19.5k points) | 12 views

0 votes

0 answers

2

virtual gate

asked 6 hours ago in Combinatory by Prince Sindhiya Active (3.6k points) | 13 views

0 votes

0 answers

3

virtual gate

asked 6 hours ago in Set Theory & Algebra by Prince Sindhiya Active (3.6k points) | 5 views

0 votes

0 answers

4

virtual gate
i have solved it by putting the values

asked 6 hours ago in Calculus by Prince Sindhiya Active (3.6k points) | 9 views

0 votes

0 answers

5

virtual gate graph theory
i am getting 6 as answer

asked 6 hours ago in Graph Theory by Prince Sindhiya Active (3.6k points) | 36 views

0 votes

0 answers

6

virtual gate

asked 6 hours ago in Linear Algebra by Prince Sindhiya Active (3.6k points) | 3 views

0 votes

0 answers

7

virtual gate test linear algebra

asked 6 hours ago in Linear Algebra by Prince Sindhiya Active (3.6k points) | 11 views

0 votes

0 answers

8

number of linearly indendent eigen vectors

asked 22 hours ago in Linear Algebra by MIRIYALA JEEVAN KUMA Active (2.1k points) | 15 views

0 votes

1 answer

9

limits
Find the limit $\operatorname { lit } _ { x \rightarrow 1 } \left\{ \left( \frac { 1 + x } { 2 + x } \right) ^ { \left( \frac { 1 - \sqrt { x } } { 1 - x } \right) } \right\}$

answered 1 day ago in Calculus by raahul (141 points) | 46 views

0 votes

1 answer

10

Rosen Generating functions
Find a closed form of the generating function of the following sequence $0, 1, -2, 4, -8, 16, -32,64,.....$

answered 1 day ago in Combinatory by Mk Utkarsh Boss (19.5k points) | 17 views

0 votes

1 answer

11

Gilbert Strang Doubt
Locate the inflection points and region where f(x) is concave up or down f(x)=$-x^3+x^2+x$

answered 1 day ago in Calculus by Magma Active (5.1k points) | 14 views

0 votes

0 answers

12

counting rosen
how many words can be made from the word apple a)with repetition b)without repetition

asked 1 day ago in Combinatory by rtalwar (79 points) | 14 views

0 votes

1 answer

13

doubt #Abelian group
reference:Rosen i think two more abelian groups are possible . 1 and 3 are given ,2 and 4 also exist .if i m wrong let me know ,thank you.

answered 1 day ago in Set Theory & Algebra by Mk Utkarsh Boss (19.5k points) | 45 views

0 votes

1 answer

14

rosen counting
A multiple choice test contains 10 questions There are 4 possible answers for each question? a)How many ways can a student answer the questions on the test if the student answers every question? b)How many ways can a student answer the questions on the test if the student can leave answers blank?

answered 1 day ago in Combinatory by Bhagyashree Mukherje Active (1.8k points) | 11 views

0 votes

0 answers

15

rosen counting
How many bit strings with length not exceeding n ,where n is a positive integer ,consist entirely of 1's?

asked 1 day ago in Combinatory by rtalwar (79 points) | 22 views

0 votes

1 answer

16

Calculus-Definite Integral
What is the value of $\int_0^\pi log(1+cosx)dx$

answered 1 day ago in Calculus by Prateek Raghuvanshi Loyal (6.4k points) | 24 views

0 votes

1 answer

17

Probability - Gravner-37
A factory has three machines, M1, M2, and M3, that produce items (say, light bulbs). It is impossible to tell which machine produced a particular item, but some are defective. Here are the known numbers: machine proportion of items made prob. any made item is ... 5 0.003 You pick an item, test it, and find it is defective. What is the probability that it was made by M2?

answered 2 days ago in Probability by Paras Nath Loyal (9k points) | 21 views

0 votes

1 answer

18

Permutation and Combination
An Entrepenuer wants to assign 5 different jobs to 3 of his employees. If every employee is assigned atleast 1 task, how many ways the entrepenuer can assign those task to employees ?

answered 2 days ago in Mathematical Logic by srestha Veteran (98.3k points) | 17 views

0 votes

1 answer

19

Complete Matching
Consider the Bipartite graph shown. If four edges are chosen at random, what is the probability that they form a complete matching from V1 to V2 ? A. 0.039 B. 0.052 C. 0.071 D. 0.083

answered 2 days ago in Mathematical Logic by Utkarsh Joshi Active (1.8k points) | 15 views

0 votes

1 answer

20

Find closed form for the generating function

answered 2 days ago in Combinatory by Navneet Kalra Junior (569 points) | 14 views

0 votes

0 answers

21

permutation and combination(doubt)
Q.1) find total number of 4 letter word which can be formed by using letter of word ALLAHABAD.in such a manner that there is exactly 2two letter are same and rest are different.

asked 2 days ago in Combinatory by BASANT KUMAR Active (1.9k points) | 23 views

0 votes

2 answers

22

ISRO-2017-Q4
The function f:[0,3]->[1,29] defined by f(x)=2*X^3 -15*X^2+36*X+1 is a) injective and surjective b) injective but not surjective c) injective but not surjective d) neither injective nor surjective

answered 3 days ago in Set Theory & Algebra by Gyanu (57 points) | 438 views

0 votes

1 answer

23

Gateforum Test series

answered 3 days ago in Mathematical Logic by Utkarsh Joshi Active (1.8k points) | 27 views

+1 vote

1 answer

24

Self doubt #Generating functions
$\sum_{.}^{.} (3r^{2} + 5r -21) x^{r}$will be equal to :?

answered 3 days ago in Combinatory by mitesh kumar (91 points) | 31 views

+5 votes

2 answers

25

TIFR2018-B-8
In an undirected graph $G$ with $n$ vertices, vertex $1$ has degree $1$, while each vertex $2,\ldots,n-1$ has degree $10$ and the degree of vertex $n$ is unknown, Which of the following statement must be TRUE on the graph $G$? There is a path from vertex $1$ to ... Vertex $n$ has degree $1$. The diameter of the graph is at most $\frac{n}{10}$ All of the above choices must be TRUE

answered 3 days ago in Graph Theory by Sourav Basu Active (1.8k points) | 271 views

0 votes

0 answers

26

Self Doubt
The question is asking, which of the following is a Toset. How to conclude on seeing the hasse diagrams of D1 and D2.

asked 3 days ago in Set Theory & Algebra by Gupta731 (273 points) | 11 views

+1 vote

0 answers

27

Gateforum Test Series

asked 3 days ago in Mathematical Logic by Gupta731 (273 points) | 20 views

0 votes

0 answers

28

Matrix
Vector space is in syllabus of gate 2019 cse????????

asked 3 days ago in Mathematical Logic by akankshadewangan24 Active (4.1k points) | 10 views

0 votes

3 answers

29

Propositional Logic
Ans. B

answered 3 days ago in Mathematical Logic by Things To Know (Thin Junior (553 points) | 47 views

0 votes

2 answers

30

Logic

answered 3 days ago in Mathematical Logic by Things To Know (Thin Junior (553 points) | 33 views

0 votes

2 answers

31

Propositional Logic
Ans. A

answered 3 days ago in Mathematical Logic by Things To Know (Thin Junior (553 points) | 40 views

+1 vote

1 answer

32

What's the coefficient of this expansion??

answered 3 days ago in Mathematical Logic by Lakshman Patel RJIT Loyal (9.4k points) | 88 views

0 votes

1 answer

33

Find coefficient of x^7 doubt ?
Find coefficient of x^7 in expansion of (1 + 2x - x^2)^4 my answer = -8 by using multinomial , answer given -1024

answered 3 days ago in Mathematical Logic by Lakshman Patel RJIT Loyal (9.4k points) | 102 views

0 votes

1 answer

34

permutation and combination(simple question)

answered 4 days ago in Combinatory by Utkarsh Joshi Active (1.8k points) | 54 views

0 votes

0 answers

35

permutation and combination(basic question)

asked 4 days ago in Combinatory by BASANT KUMAR Active (1.9k points) | 43 views

+6 votes

4 answers

36

GATE1987-1-xxi
If $a, b,$ and $c$ are constants, which of the following is a linear inequality? $ax+bcy=0$ $ax^{2}+cy^{2}=21$ $abx+a^{2}y \geq 15$ $xy+ax \geq 20$

answered 4 days ago in Linear Algebra by rohittulasyan (99 points) | 536 views

+2 votes

1 answer

37

Generating function
Please tell me the approach of solving the question for finding a closed formula for the given generating function:- $x^{2} / (1-x)^{2}$ . Please determine the general approach how to solve

answered 4 days ago in Combinatory by Lakshman Patel RJIT Loyal (9.4k points) | 53 views

0 votes

0 answers

38

permutation function
Explain how to identify whether any given function is even permutation function or odd permutation function?

asked 4 days ago in Set Theory & Algebra by Priyanka17 Active (1k points) | 12 views

0 votes

0 answers

39

ACE_Test_Series
A set S has 5 elements. How many ways we can choose subsets P and Q of S .So , that (P $\cap$ Q) = $\Phi$

asked 4 days ago in Combinatory by Magma Active (5.1k points) | 69 views

0 votes

0 answers

40

Cyclic group
The order of cyclic group is equal to order of generating element.... Somebody explain with example plz

asked 4 days ago in Mathematical Logic by akankshadewangan24 Active (4.1k points) | 10 views

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