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Recent questions tagged engineering-mathematics
0
votes
0
answers
691
Probability
In an area, it rains once in every three days. The local evening newspaper attempts to predict whether it rains or not in the following day. Three quarters of rainy days and three fifths of dry days are correctly predicted by the previous evening’s paper. Given that this evening’s paper predicts rain, what is the probability that it will actually rain tomorrow?
In an area, it rains once in every three days. The local evening newspaper attempts to predict whether it rains or not in the following day. Three quarters of rainy days ...
just_bhavana
1.1k
views
just_bhavana
asked
Nov 18, 2017
Probability
engineering-mathematics
probability
+
–
3
votes
1
answer
692
Limit
the value of :- $\lim_{x \rightarrow 0}(\frac{1}{x^2} - \frac{1}{sin^2x})$ Is_______ Answer given is -1\3
the value of :-$\lim_{x \rightarrow 0}(\frac{1}{x^2} - \frac{1}{sin^2x})$Is_______Answer given is -1\3
Shubhanshu
1.5k
views
Shubhanshu
asked
Nov 18, 2017
Calculus
engineering-mathematics
calculus
limits
+
–
0
votes
1
answer
693
Engineering Maths: Increasing function
If $f(x)$ is an increasing function ,then $(f(x))^2$ >$f(x)$ ? True/false
If $f(x)$ is an increasing function ,then $(f(x))^2$ >$f(x)$ ? True/false
rahul sharma 5
311
views
rahul sharma 5
asked
Nov 14, 2017
Calculus
engineering-mathematics
linear-algebra
calculus
+
–
5
votes
1
answer
694
Matrix Eigen Value
A 3× 3 real matrix has an eigen value i, then its other two eigen values can be (A) 0, 1. (B) -1, i. (C) 2i, -2i. (D) 0, -i.
A 3× 3 real matrix has an eigen value i, then its other two eigen values can be(A) 0, 1. (B) -1, i.(C) 2i, -2i. (D) 0, -i.
Lakshman Bhaiya
1.5k
views
Lakshman Bhaiya
asked
Nov 14, 2017
Mathematical Logic
engineering-mathematics
linear-algebra
matrix
eigen-value
+
–
5
votes
1
answer
695
Matrix
If $A=\begin{bmatrix} 1 &2 &2 \\ 2&1 &-2 \\ a&2 &b \end{bmatrix}$ then$AAA^{T}=3I$ $I$ is a $3\times 3$ identity matrix $\left (a,b \right )$ can be ____________
If$A=\begin{bmatrix} 1 &2 &2 \\ 2&1 &-2 \\ a&2 &b \end{bmatrix}$then$AAA^{T}=3I$$I$ is a $3\times 3$ identity matrix$\left (a,b \right )$ can be ____________
srestha
577
views
srestha
asked
Nov 14, 2017
Linear Algebra
linear-algebra
engineering-mathematics
matrix
+
–
0
votes
0
answers
696
Eigen vector correspond Eigen value 1
hem chandra joshi
1.1k
views
hem chandra joshi
asked
Nov 13, 2017
Mathematical Logic
engineering-mathematics
eigen-value
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–
1
votes
0
answers
697
Eigen values confusing question
Parshu gate
228
views
Parshu gate
asked
Nov 13, 2017
Computer Networks
eigen-value
linear-algebra
engineering-mathematics
+
–
1
votes
0
answers
698
Normal Distribution
Can any one say how to solve Z score questions like below 1) P(1≤Z≤30) = ? 2) P(z>2.5)=? 3) P(z<=k) = 0.9 find k? Will they give any related values of Z-scores in exam ?
Can any one say how to solve Z score questions like below1) P(1≤Z≤30) = ?2) P(z>2.5)=?3) P(z<=k) = 0.9 find k?Will they give any related values of Z-scores in exam ?
Anjan
512
views
Anjan
asked
Nov 12, 2017
Probability
engineering-mathematics
probability
+
–
4
votes
2
answers
699
probability
Consider a coin with probability P to be heads. What is the probability that the first head will appear on the even numbered tosses? (A) (1 - P) / 2 (B) (1 - P) / (2 - P) (C) (1 - P) / (3 - P) (D) 1 / (P (1 - P))
Consider a coin with probability P to be heads. What is the probability that the first head will appear on the even numbered tosses?(A) (1 - P) / 2(B) (1 - P) / (2 - P)(C...
Parshu gate
594
views
Parshu gate
asked
Nov 11, 2017
Probability
engineering-mathematics
probability
+
–
1
votes
2
answers
700
eigen values and determinents
Let A be a 4 × 4 matrix with real entries such that -1, 1, 2, -2 are its eigen values. If B = A4 - 5A2 + 5I where I denotes 4 × 4 identity matrix, then which of the following is correct? (det(X) represents determinant of X) (A) det(A + B) = 0 (B) det(B) = 1 (C) trace of A + B is 4 (D) all of these
Let A be a 4 × 4 matrix with real entries such that -1, 1, 2, -2 are its eigen values. If B = A4 - 5A2 + 5I where I denotes 4 × 4 identity matrix, then which of the fol...
Parshu gate
2.0k
views
Parshu gate
asked
Nov 11, 2017
Linear Algebra
eigen-value
engineering-mathematics
linear-algebra
+
–
3
votes
0
answers
701
rank of matrix
The rank of the matrix of coefficients of a homogeneous system of m linear equations in n unknowns is never less than the rank of the augmented matrix. (A) Always true (B) Sometimes true (C) False (D) None of the above
The rank of the matrix of coefficients of a homogeneous system of m linear equations in n unknowns is never less than the rank of the augmented matrix.(A) Always true(B) ...
Parshu gate
558
views
Parshu gate
asked
Nov 11, 2017
Linear Algebra
rank-of-matrix
matrix
linear-algebra
engineering-mathematics
+
–
2
votes
3
answers
702
integration
$\int_{-4}^{4}|3-x|dx$ a) 13 b)8 c)25 d)24
$\int_{-4}^{4}|3-x|dx$a) 13 b)8 c)25 d)24
Parshu gate
695
views
Parshu gate
asked
Nov 11, 2017
Calculus
engineering-mathematics
calculus
integration
definite-integral
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–
1
votes
0
answers
703
Finding minima of function.
For what value of 'k' (in terms of $X_{i}$'s) following functions will attain their minimum value $\rightarrow$ $F_{1}(k)$ = $\sum_{i=0}^{n} \left | X_{i} - k \right |$ $F_{2}(k)$ = $\sum_{i=0}^{n}\left ( X_{i} - k \right )^{2}$ If possible, please provide some valid proof for supporting your answer ?
For what value of 'k' (in terms of $X_{i}$'s) following functions will attain their minimum value $\rightarrow$ $F_{1}(k)$ = $\sum_{i=0}^{n} \left | X_{i} - k \right |$$...
Chhotu
271
views
Chhotu
asked
Nov 11, 2017
Probability
engineering-mathematics
statistics
maxima-minima
+
–
1
votes
0
answers
704
Range of covariance and correlation coefficient
Hi Guys, How can we prove following $\rightarrow$ $-\infty \leq Covariance(X,Y) \leq +\infty$ and $ -1 \leq correlationCoefficient(X,Y) \leq +1$
Hi Guys,How can we prove following $\rightarrow$$-\infty \leq Covariance(X,Y) \leq +\infty$and $ -1 \leq correlationCoefficient(X,Y) \leq +1$
Chhotu
387
views
Chhotu
asked
Nov 11, 2017
Probability
engineering-mathematics
probability
+
–
1
votes
3
answers
705
NUMBER of soutions the equations have?
Consider the following system system of equations x1-2x3=0 x1-x2=0 2x1-2x2=0 No solution Infinite number of solutions Three solution unique solution
Consider the following system system of equationsx1-2x3=0x1-x2=02x1-2x2=0 No solution Infinite number of solutions Three solutionunique solution
Parshu gate
455
views
Parshu gate
asked
Nov 10, 2017
Linear Algebra
engineering-mathematics
system-of-equations
+
–
1
votes
0
answers
706
Algo. for Graph Isomorphism
Hi Guys, There is no algorithm to find graph isomorphism (as mentioned by @Rupendra Choudhary) then how much time does Brute force algorithm will takes (means one answer could be n! but can we do better then this )?
Hi Guys,There is no algorithm to find graph isomorphism (as mentioned by @Rupendra Choudhary) then how much time does Brute force algorithm will takes (means one answer c...
Chhotu
233
views
Chhotu
asked
Nov 10, 2017
Algorithms
graph-theory
algorithms
engineering-mathematics
+
–
0
votes
1
answer
707
Matrices - LU Decompostion
Is LU Decomposition possible for every matrix ?
Is LU Decomposition possible for every matrix ?
ankitgupta.1729
912
views
ankitgupta.1729
asked
Nov 9, 2017
Linear Algebra
matrix
engineering-mathematics
linear-algebra
+
–
3
votes
1
answer
708
Cut Sets in graph
Question: Number of cut sets possible a tree with 10 vertices _________ My approach : Number of edges in a tree with 10 vertices = 9. Each of these can be considered as a cut set as deleting one edge necessarily disconnects the graph. Also any combination (I mean ... cut sets = 2^9 - 1 = 511. But the answer is written 9. Apparently they are not considering the super sets. Why?
Question: Number of cut sets possible a tree with 10 vertices _________My approach : Number of edges in a tree with 10 vertices = 9. Each of these can be considered as a...
humblefool
3.4k
views
humblefool
asked
Nov 9, 2017
Graph Theory
engineering-mathematics
graph-theory
discrete-mathematics
cut
set-theory&algebra
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–
3
votes
0
answers
709
Maths: maxima - minima (global minmum vs local minimum)
Que:- Consider the function f(x) = $2x^3 - 3x^2$ in the domain [-1, 2], the "global minimum" value of f(x) is _______? (A) -5 (B)-1 (C)4 (D) 0 Solution: f(x) = $2x^3 - 3x^2$ f'(x) = ... what will be the answer -5 or -1, as closed intervals are given, so in case of local minimum also we should consider the extreme points, right?
Que:- Consider the function f(x) = $2x^3 - 3x^2$ in the domain [-1, 2], the "global minimum" value of f(x) is _______?(A) -5 (B)-1 (C)4 (D) 0Solution:f(x) = $2x^3 - 3...
Manu Thakur
1.8k
views
Manu Thakur
asked
Nov 9, 2017
Calculus
calculus
engineering-mathematics
maxima-minima
+
–
1
votes
1
answer
710
Maths: maxima and minima
In this maxima - minima question, teacher says that critical point -2 doesn't belong to the interval [-3, 3], isn't this wrong or i am missing something?
In this maxima - minima question, teacher says that critical point -2 doesn't belong to the interval [-3, 3], isn't this wrong or i am missing something?
Manu Thakur
1.8k
views
Manu Thakur
asked
Nov 9, 2017
Calculus
engineering-mathematics
calculus
maxima-minima
+
–
3
votes
1
answer
711
Maths: Linear Algebra
Any shortcut?
Any shortcut?
Manu Thakur
623
views
Manu Thakur
asked
Nov 6, 2017
Linear Algebra
engineering-mathematics
linear-algebra
eigen-value
+
–
0
votes
0
answers
712
Maxima Minima
Find the maximum value of f(x). n is a constant f(x)= C(x,2) *$2^{n-x}$
Find the maximum value of f(x). n is a constantf(x)= C(x,2) *$2^{n-x}$
rahul sharma 5
894
views
rahul sharma 5
asked
Nov 6, 2017
Calculus
calculus
maxima-minima
engineering-mathematics
+
–
1
votes
0
answers
713
maxima , minima
Parshu gate
291
views
Parshu gate
asked
Nov 6, 2017
Calculus
maxima-minima
engineering-mathematics
calculus
+
–
0
votes
1
answer
714
PROBABILITY
Parshu gate
249
views
Parshu gate
asked
Nov 6, 2017
Probability
probability
engineering-mathematics
+
–
0
votes
2
answers
715
Engineering Mathematics - Linear Algebra
If the equations (λ+1)x + 8y = 4λ and λx + (λ+3)y = 3λ-1 have no solution, then the number of values of λ is : (A) one (B) two (C) three (D) more than three
If the equations (λ+1)x + 8y = 4λ and λx + (λ+3)y = 3λ-1 have no solution, then the number of values of λ is :(A) one (B) two (C) three (D) more than three
targate2018
620
views
targate2018
asked
Nov 5, 2017
Linear Algebra
engineering-mathematics
linear-algebra
+
–
0
votes
0
answers
716
System of equations
In this, I could draw the conclusion from the question that there would be no or infinitely many solutions but could not be able to reach how infinitely many solutions is the answer.
In this, I could draw the conclusion from the question that there would be no or infinitely many solutions but could not be able to reach how infinitely many solutions is...
Shivi rao
219
views
Shivi rao
asked
Nov 5, 2017
Linear Algebra
engineering-mathematics
linear-algebra
+
–
0
votes
1
answer
717
Gate 2012 CE Probability
The annual precipitation data of a city is normally distributed with mean and standard deviation as $1000$ $mm$ and $200$ $mm$, respectively. The probability that the annual precipitation will be more than $1200$ $mm$ is $<50\%$ $50\%$ $75\%$ $100\%$
The annual precipitation data of a city is normally distributed with mean and standard deviation as $1000$ $mm$ and $200$ $mm$, respectively. The probability that the ann...
charul
2.6k
views
charul
asked
Nov 1, 2017
Probability
engineering-mathematics
probability
+
–
1
votes
1
answer
718
Probability
Suppose two dies are rolled .What is the probability of getting 4 on the first die , when the the sum is 6 ? A) 1/5 B)1/6
Suppose two dies are rolled .What is the probability of getting 4 on the first die , when the the sum is 6 ?A) 1/5 B)1/6
NIKU
467
views
NIKU
asked
Oct 31, 2017
Probability
probability
engineering-mathematics
discrete-mathematics
conditional-probability
combinatory
+
–
1
votes
2
answers
719
probability
set2018
296
views
set2018
asked
Oct 29, 2017
Mathematical Logic
probability
engineering-mathematics
+
–
3
votes
2
answers
720
EM: Limits
Please solve the following question:
Please solve the following question:
Manu Thakur
591
views
Manu Thakur
asked
Oct 29, 2017
Calculus
calculus
limits
engineering-mathematics
+
–
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