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Recent questions tagged engineeringmathematics
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1
Probability Question
Source: https://www.facebook.com/photo.php?fbid=10156888790977640&set=gm.2199432896992966&type=3&theater
asked
2 days
ago
in
Probability
by
smsubham
Loyal
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8.5k
points)

60
views
probability
engineeringmathematics
0
votes
0
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2
Self Doubt
If M is a square matrix with a zero determinant, which of the following assertion (s) is (are) correct? S1: Each row of M can be represented as a linear combination of the other rows S2: Each column of M can be represented as a linear combination of the other columns True or false
asked
3 days
ago
in
Linear Algebra
by
jatin khachane 1
Active
(
3.1k
points)

37
views
engineeringmathematics
determinant
+1
vote
0
answers
3
ME test series
A 3 X 3 matrix P has 3 eigen values $1 , 0.5 , 3$ What will be eigen values of $P^{2} + 2P + I$
asked
Dec 2
in
Mathematical Logic
by
jatin khachane 1
Active
(
3.1k
points)

41
views
madeeasytestseries
engineeringmathematics
0
votes
0
answers
4
Doubt on conditional probability
It had been found from past experience that of the articles produced by a factory, 20% comes from Machine 1; 30% comes from Machine 2 and 50% from Machine 3. The percentages of satisfactory articles among those produced are 95 for machine 1, ... that is satisfactory? ii) Assume the article is satisfactory. What is the probability that it was produced by machine 1?
asked
Nov 30
in
Probability
by
Tuhin Dutta
Loyal
(
8.4k
points)

38
views
probability
conditionalprobability
engineeringmathematics
0
votes
1
answer
5
Doubt on probability
15 students among whom are A and B arranged randomly in a row. Obtain the probability that there will be 3 students between A and B?
asked
Nov 30
in
Probability
by
Tuhin Dutta
Loyal
(
8.4k
points)

39
views
probability
engineeringmathematics
+1
vote
0
answers
6
Self Doubt
Relation between rank and number of nonzero eigenvalues of a matrix If Rank of n X n matrix is r, then number of non zero eigen values ?? In either of cases det(A) = 0 or if det(A) not equal 0
asked
Nov 29
in
Linear Algebra
by
jatin khachane 1
Active
(
3.1k
points)

22
views
engineeringmathematics
linearalgebra
0
votes
0
answers
7
Self Doubt
$f(x) =2x^{3}9x^{2} +1$ on the interval [−2,2] 1) Find all the local (=relative) minima and maxima of the function 2) Find all the minimum and maximum value of the function in [2,2]
asked
Nov 29
in
Mathematical Logic
by
jatin khachane 1
Active
(
3.1k
points)

27
views
engineeringmathematics
maximaminima
0
votes
1
answer
8
GradeUp quizMaxima minima
asked
Nov 28
in
Calculus
by
aditi19
Active
(
2k
points)

87
views
calculus
engineeringmathematics
maximaminima
0
votes
0
answers
9
Probability
From a deck of 52 cards, what is the probability of picking 2 kings: a)With replacement B)Without replacement Please explain in details. I am new to probability. Thank you. :)
asked
Nov 28
in
Probability
by
punkprincess
(
47
points)

18
views
probability
engineeringmathematics
+1
vote
0
answers
10
TestBookSeries
asked
Nov 24
in
Set Theory & Algebra
by
monty
Active
(
1.1k
points)

64
views
engineeringmathematics
discretemathematics
settheory&algebra
0
votes
1
answer
11
Probablity
Suppose each of three men at a party throws his hat into the center of the room. The hats are first mixed up and each man randomly selects a hat. what is the probability that a. All of three men select his own hat. b.None of three men select his own hats.
asked
Nov 23
in
Probability
by
kumar.dilip
Active
(
2.9k
points)

50
views
probability
engineeringmathematics
0
votes
0
answers
12
Gilbert Strang
$\int_{1}^{∞}\frac{dx}{x^6+1}$
asked
Nov 22
in
Calculus
by
aditi19
Active
(
2k
points)

42
views
gilbertstrang
calculus
engineeringmathematics
integration
0
votes
0
answers
13
test series  Testbook
asked
Nov 18
in
Probability
by
monty
Active
(
1.1k
points)

50
views
testbooktestseries
engineeringmathematics
probability
uniformdistribution
0
votes
0
answers
14
Linear AlgebraMETest
If the determinant of the below matrix is 245, what is the value of X? $\begin{bmatrix} 0 & 4& 2 &1 \\ 3& 1 & 0 & 2\\ 5&2 & x& 4\\ 6& 1 & 1 & 0 \end{bmatrix}$ ... , because by keeping 6 in place of x I am getting determinant as 245(Result verified by computer program). Please let me know where I am going wrong?
asked
Nov 17
in
Linear Algebra
by
Ayush Upadhyaya
Boss
(
18.4k
points)

66
views
linearalgebra
engineeringmathematics
0
votes
0
answers
15
Doubt
can someone explain the formula n^k when k distinguishable items are to be placed in n distinguishable boxes without any restrictions?
asked
Nov 16
in
Combinatory
by
aditi19
Active
(
2k
points)

16
views
permutationsandcombinations
engineeringmathematics
0
votes
1
answer
16
Integration
$\int_{0}^{1}\frac{x^{\alpha }1}{logx}dx$ where $\alpha>0$
asked
Nov 16
in
Calculus
by
srestha
Veteran
(
103k
points)

44
views
integration
calculus
engineeringmathematics
0
votes
0
answers
17
#math combat
If $A$ is $2\times 2$ matrix ,eigen value is $1,2$ and corresponding eigen vector $[1,2]^{T}$ and $[9,1]^{T}$.find sum of element of the matrix $A.$
asked
Nov 15
in
Linear Algebra
by
amit166
Junior
(
529
points)

41
views
engineeringmathematics
linearalgebra
eigenvalue
+1
vote
1
answer
18
Linear Algebra_25
Let AX=B be a system of n linear equations in n unknown with integer coefficient and the components of B are all integer. Consider the following (1)det(A)=1 (2)det(A)=0 (3)Solution X has integer entries (4)Solution X does not have all integer entries For the given system ... then 3 holds true (c)If 1, then 4 holds true (d)If 2, then 3 holds true I think (d) should be the answer.
asked
Nov 15
in
Linear Algebra
by
Ayush Upadhyaya
Boss
(
18.4k
points)

62
views
linearalgebra
engineeringmathematics
systemofequations
0
votes
0
answers
19
Gilbert Strang
$\int_{}^{}\frac{x dx}{\sqrt{x^41}}$
asked
Nov 14
in
Calculus
by
aditi19
Active
(
2k
points)

29
views
gilbertstrang
calculus
engineeringmathematics
integration
+2
votes
1
answer
20
Got from friend
Find the limit of the given expression $\lim_{x\to\frac{\pi}{2}}\left ( \sec x\frac{1}{1\sin x} \right )$
asked
Nov 13
in
Calculus
by
JeetRabari
(
49
points)

157
views
engineeringmathematics
calculus
limits
0
votes
1
answer
21
Probability
In four tests taken by 450 students, marks are found to be normally distributed with mean and variance as given below Test Id Mean Variance 1 74 121 2 75 100 3 78 196 4 82 169 A has secured 80 in the first test, 81 in the second, 86 in the third and ... fourth. In which test did A actually perform best relative to other students. (A)Fourth Test (B)Third Test (C)Second Test (D)First Test
asked
Nov 13
in
Probability
by
Ayush Upadhyaya
Boss
(
18.4k
points)

84
views
engineeringmathematics
probability
normaldistribution
0
votes
0
answers
22
Set Theory
A relation R on a set of positive integers is defined by (a,b) belongs to R iff a and b are relatively prime. Which of the following is true about R? a. Symmetric and Reflexive b. Symmetric and irreflexive c.Symmetric and transitive d. Symmetric and not transitive The Ans is given as (d) but I think (b) is true. Any thoughts?
asked
Nov 8
in
Set Theory & Algebra
by
dan31
(
273
points)

47
views
discretemathematics
settheory&algebra
settheory
engineeringmathematics
sets
+1
vote
1
answer
23
Find Inverse
Inverse of this matrix $\begin{bmatrix} 2 &1 &1 \\ 3 &2 &1 \\ 2& 1 &2 \end{bmatrix}$ will be A)$\begin{bmatrix} 3 &4 &1 \\ 1 &2 &0 \\ 1 &1 &1 \end{bmatrix}$ B)$\begin{bmatrix} 3 &1 &1 \\ 4 &2 &1 \\ 1& 0 &1 \end{bmatrix}$
asked
Nov 3
in
Linear Algebra
by
srestha
Veteran
(
103k
points)

55
views
engineeringmathematics
matrix
0
votes
0
answers
24
urn contains 30 red balls and 70 green balls
asked
Nov 2
in
Probability
by
MIRIYALA JEEVAN KUMA
Active
(
2.3k
points)

22
views
probability
engineeringmathematics
discretemathematics
0
votes
0
answers
25
Basic Probability
A person throwing a dice and when even have come he got $2$ points and when odd have come he got $1$ points.What is the probability when he got exactly $6$ points?
asked
Nov 2
in
Probability
by
Lakshman Patel RJIT
Boss
(
18.9k
points)

24
views
engineeringmathematics
probability
0
votes
1
answer
26
linear algebra
The Eigen Vectors of the Matrix $A=\begin{bmatrix} 3 &4 \\ 4 &3 \end{bmatrix}$ are $\begin{bmatrix} a\\ 1 \end{bmatrix},\begin{bmatrix} 1\\ b \end{bmatrix}$ the $a+b=?$ Answer is given (a+b)=0 how ?????
asked
Oct 30
in
Linear Algebra
by
altamash
(
309
points)

36
views
engineeringmathematics
linearalgebra
eigenvectors
0
votes
1
answer
27
Permutation and combination
9 different books are to be arranged on a bookshelf. 4 of these books were written by Shakespeare, 2 by Dickens, and 3 by Conrad. How many possible permutations are there if the books by Conrad must be separated from one another?
asked
Oct 30
in
Combinatory
by
Lakshman Patel RJIT
Boss
(
18.9k
points)

47
views
engineeringmathematics
discretemathematics
permutationsandcombinations
0
votes
1
answer
28
Gilbert Strang
Differentiate y=$x^{1/lnx}$
asked
Oct 28
in
Calculus
by
aditi19
Active
(
2k
points)

29
views
gilbertstrang
calculus
integration
engineeringmathematics
0
votes
0
answers
29
Eigen Vector
asked
Oct 26
in
Linear Algebra
by
Na462
Loyal
(
7.4k
points)

27
views
eigenvalue
linearalgebra
engineeringmathematics
0
votes
0
answers
30
Eigen Values(Matrix is not idempotent)
Given that a matrix $A_{3\times3},$which is not idempotent matrix.And $A^{3}=A.$ Then find them, $1)$ Eigen Values $2)$ Trace of the matrix$=$Sum of Leading Diagonal Elements$=\sum a_{ij},$ where $i=j$ $3)Det(A)$
asked
Oct 25
in
Linear Algebra
by
Lakshman Patel RJIT
Boss
(
18.9k
points)

40
views
engineeringmathematics
linearalgebra
eigenvalue
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