Recent questions tagged engineering-mathematics

2 votes
2 answers
1231
0 votes
1 answer
1232
Please explain how did they get that equation in E and V.
0 votes
1 answer
1234
while solving linear equations, there comes a case where rank < number of varibles,then we say there are n-r linearly independent solution.What exactly does it mean ?
3 votes
2 answers
1235
The number of linearly independent Eigen vectors of is a) 0b) 1 C) 2d) infinite
1 votes
3 answers
1236
What is the chromatic number of Kn - e (complete graph with an edge removed)?
3 votes
1 answer
1237
Consider a 3 x 3 real symmetric matrix S such that two of its eigen values are a &ne; 0 , b &ne; 0 with respective Eigen vectors [ x1 x2 x3 ] , [ y1 y2 y3 ] . If a &ne...
4 votes
3 answers
1240
In A = (aij)nxn where aij = 1 &forall; i,j then number of different independent Eigen Vectors of A are _________ . (a) 1(b) n-1(c) 2(d) n
0 votes
1 answer
1241
1 votes
2 answers
1242
I think the ans should be C, but the given answer is A. Anyone can explain please?
3 votes
2 answers
1243
Let $A = \left \{1, 2, 3, 4 \right \}$. Number of functions possible on $A$ which are neither $1-1$ nor on-to is _________.
0 votes
1 answer
1244
Given solution of this question:I think that number of 5 elements subsets with 7 should be C(n-1, 4) instead of C(n,4) as we have already fixed 7 so number of elements le...
1 votes
2 answers
1245
1 votes
1 answer
1246
Given explanation of the question:I believe that in place of last C(8,3) it should be C(7,3) because 3 people have been already chosen before that. Please check whether I...
1 votes
2 answers
1248
2 votes
1 answer
1249
The number of ways 16 identical objects can be distributed among 4 persons such that each person gets atleast 2 objects is ______.If possible kindly explain me the approa...
2 votes
2 answers
1250
Three numbers are chosen at random without replacement from $\left\{1, 2, 3,....., 10 \right\}$. What is the probability that minimum of the chosen numbers is $3$ or thei...
3 votes
1 answer
1251
The possible set of eigen values of a $4*4$ skew symmetric; orthogonal real matrix is A). $\pm i$B), $(\pm i,\pm1)$C). $\pm1$D). $(0,\pm i)$
1 votes
1 answer
1252
what is positively skewed ,symmetric and negatively skewed distribution?
3 votes
1 answer
1253
consider following set of equations$x_1+x_2+x_3=6$$2x_1+2x_2+3x_3=14$$3x_1+x_2+2x_3=14$Solution for this set exists when value of $x_2$ is
4 votes
3 answers
1254
Eigenvalue of matrix $A$ , $\begin{bmatrix} 2 &7 &10 \\ 5& 2 & 25\\ 1& 6 &5 \end{bmatrix}$ is $-9.33$ other eigenvalue is1) $18.3...
0 votes
1 answer
1255
consider the following function f(x) = x3 /3+ x2 /2 -6x+1000find the intervals on which f is increasing.Is my solution right approach for this kind of numerical?? Caption...
1 votes
0 answers
1256
Find the coefficient of $x^4$ in the series expansion of $(1+x+x^2)^{-4}$?How do you expand $(1+x+x^2)^{-4}$? Using Taylor series?
4 votes
1 answer
1257
7 votes
3 answers
1258
How many ways are there for a horse race with 4 horses to finish if ties are possible?(any number of horses may tie)