Recent questions tagged engineering-mathematics

3 votes
1 answer
692
the value of :-$\lim_{x \rightarrow 0}(\frac{1}{x^2} - \frac{1}{sin^2x})$Is_______Answer given is -1\3
0 votes
1 answer
693
5 votes
1 answer
694
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.
5 votes
1 answer
695
If$A=\begin{bmatrix} 1 &2 &2 \\ 2&1 &-2 \\ a&2 &b \end{bmatrix}$then$AAA^{T}=3I$$I$ is a $3\times 3$ identity matrix$\left (a,b \right )$ can be ____________
1 votes
0 answers
698
Can any one say how to solve Z score questions like below1) P(1≤Z≤30) = ?2) P(z>2.5)=?3) P(z<=k) = 0.9 find k?Will they give any related values of Z-scores in exam ?
4 votes
2 answers
699
Consider a coin with probability P to be heads. What is the probability that the first head will appear on the even numbered tosses?(A) (1 - P) / 2(B) (1 - P) / (2 - P)(C...
3 votes
0 answers
701
2 votes
3 answers
702
1 votes
0 answers
704
Hi Guys,How can we prove following $\rightarrow$$-\infty \leq Covariance(X,Y) \leq +\infty$and $ -1 \leq correlationCoefficient(X,Y) \leq +1$
1 votes
3 answers
705
Consider the following system system of equationsx1-2x3=0x1-x2=02x1-2x2=0 No solution Infinite number of solutions Three solutionunique solution
1 votes
0 answers
706
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...
0 votes
1 answer
707
1 votes
1 answer
710
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?
0 votes
0 answers
712
Find the maximum value of f(x). n is a constantf(x)= C(x,2) *$2^{n-x}$
1 votes
0 answers
713
0 votes
1 answer
714
0 votes
2 answers
715
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
0 votes
0 answers
716
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...
0 votes
1 answer
717
1 votes
1 answer
718
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
1 votes
2 answers
719
3 votes
2 answers
720
Please solve the following question: