Recent questions tagged system-of-equations

+1 vote

1 answer

1

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, 2018 in Linear Algebra by Ayush Upadhyaya Boss (25.3k points) | 90 views

0 votes

0 answers

2

System of Equations
My solution:- Since the Determinant of matrix is Zero. So it will posses non trivial solution. Now what should be the answer ? According to me Option D as rank is < Order so infinite number of solutions

asked Oct 25, 2018 in Linear Algebra by Na462 Loyal (8.7k points) | 61 views

+1 vote

0 answers

3

SELF DOUBT
consider a system of linear equation where AMxN XNx1 =BMx1 TRUE OR FALSE Q1 IF B=0 AND DETERMINENT OF A i.e |A| IS NOT EQUAL TO ZERO THEN IT MEANS UNIQUE SOLUTION?? Q2 IF B NOT EQUAL TO 0 AND DETERMINENT OF A i.e |A| IS NOT EQUAL TO ZERO THEN IT MEANS INFINITE MANY SOLUTION SOLUTION?? Q3 IF B IS NOT EQUAL TO 0 AND M<N THEN IT MEANS NO UNIQUE SOLUTION??

asked Oct 3, 2018 in Linear Algebra by eyeamgj Loyal (7.1k points) | 30 views

0 votes

1 answer

4

Linear Algebra RGPV 2001
Test the consistency of the following system of equations and solve if possible $3x + 3y +2z = 1$ $x + 2y = 4$ $10y + 3z = -2$ $2x - 3y -z = 5$

asked Sep 29, 2018 in Linear Algebra by Mk Utkarsh Boss (34.8k points) | 85 views

0 votes

1 answer

5

Hk Dass Linear Algebra
Test the consistency of the following system of equations $5x + 3y + 7z = 4 $ $3x + 26y + 2z = 9$ $7x + 2y + 10z = 5$

asked Sep 29, 2018 in Linear Algebra by Mk Utkarsh Boss (34.8k points) | 87 views

0 votes

1 answer

6

Linear system of equations

asked Sep 16, 2018 in Linear Algebra by Na462 Loyal (8.7k points) | 56 views

+3 votes

4 answers

7

ISI-2016-04
If $a,b,c$ and $d$ satisfy the equations $a+7b+3c+5d =16\\8a+4b+6c+2d = -16\\ 2a+6b+4c+8d = 16 \\ 5a+3b+7c+d= -16$ Then $(a+d)(b+c)$ equals $-4$ $0$ $16$ $-16$

asked Mar 31, 2018 in Linear Algebra by jjayantamahata Active (1.7k points) | 265 views

+1 vote

1 answer

8

GATE Linear Algebra
For what values of $\lambda$ the system of equations will have $2$ linear independent solutions - $x + y + z = 0$ $(\lambda + 1) y + (\lambda + 1) z = 0$ ($\lambda^{2}- 1) z = 0$ Now the problem i'm facing is if there is $2$ ... of matrix will be $1$. Can anyone please explain in simple why the rank of matrix should be $1$ if we need $2$ Linear Independent solution. Thankyou.

asked Mar 2, 2018 in Linear Algebra by pilluverma123 (323 points) | 145 views

+1 vote

1 answer

9

Test Series ACE
How to solve? ________________ Number of non-negative integer solutions such that x+y+z=17 where x>1,y>2,z>3 is --------

asked Jan 13, 2018 in Linear Algebra by ankit_thawal Active (2.1k points) | 107 views

+2 votes

1 answer

10

MadeEasy Test Series: General Aptitude - System Of Equations
how to solve such questions?

asked Jan 5, 2018 in Numerical Ability by charul Active (1.3k points) | 186 views

0 votes

3 answers

11

Linear Homogeneous Equation (Allen 2017)
Consider a system of equations (λ – a)x + 2y +3z = 0, x +2(λ – b) y + 3z = 0, x + 2y + 3(λ – c) z = 0, which has a non-trivial solution. Product of all values of λ for above system is (1) abc + a + b + c + 2 (2) abc + a + b + c – 2 (3) abc – a – b – c – 2 (4) abc – a – b – c + 2 Ans given is Option C. Can anyone explain the complete solution?

asked Dec 1, 2017 in Linear Algebra by stanchion Junior (525 points) | 127 views

0 votes

3 answers

12

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

asked Nov 10, 2017 in Linear Algebra by Parshu gate Active (5.1k points) | 94 views

+29 votes

4 answers

13

GATE2017-1-3
Let $c_{1}.....c_{n}$ be scalars, not all zero, such that $\sum_{i=1}^{n}c_{i}a_{i}$ = 0 where $a_{i}$ are column vectors in $R^{n}$. Consider the set of linear equations $Ax = b$ ... of equations has a unique solution at $x=J_{n}$ where $J_{n}$ denotes a $n$-dimensional vector of all 1. no solution infinitely many solutions finitely many solutions

asked Feb 14, 2017 in Linear Algebra by Arjun Veteran (395k points) | 5k views

0 votes

2 answers

14

GATE2011-GG-GA-6
The number of solutions for the following system of inequalities is $X_1≥ 0$ $X_2 ≥ 0$ $X_1+ X_2 ≤ 10$ $2X_1+ 2X_2 ≥ 22$ $0$ infinite $1$ $2$

asked Feb 16, 2016 in Numerical Ability by Akash Kanase Boss (43.6k points) | 251 views

+29 votes

3 answers

15

GATE2016-2-04
Consider the system, each consisting of $m$ linear equations in $n$ variables. If $m < n$, then all such systems have a solution. If $m > n$, then none of these systems has a solution. If $m = n$, then there exists a system which has a solution. Which one of the ... is CORRECT? $I, II$ and $III$ are true. Only $II$ and $III$ are true. Only $III$ is true. None of them is true.

asked Feb 12, 2016 in Linear Algebra by Akash Kanase Boss (43.6k points) | 3.8k views

+1 vote

1 answer

16

TIFR-2011-Maths-A-13
$A$ is $3 \times 4$-matrix of rank $3$. Then the system of equations, $Ax = b$ has exactly one solution.

asked Dec 9, 2015 in Linear Algebra by makhdoom ghaya Boss (41.1k points) | 139 views

+2 votes

1 answer

17

TIFR2014-A-1
Consider the reactions $X + 2Y \rightarrow 3Z\\2X + Z \rightarrow Y.$ Let $n_{X}$, $n_{Y}$, $n_{Z}$ denote the numbers of molecules of chemicals $X, Y, Z$ in the reaction chamber. Then which of the following is conserved by both reactions? $n_{X} + n_{Y} + n_{Z}$. $n_{X}+ 7n_{Y} + 5n_{Z}$. $2n_{X} + 9n_{Y} − 3n_{Z}$. $3n_{X} − 3n_{Y} + 13n_{Z}$. None of the above.

asked Nov 9, 2015 in Linear Algebra by makhdoom ghaya Boss (41.1k points) | 279 views

+5 votes

1 answer

18

TIFR2010-Maths-B-14
The equations. $x_{1}+2x_{2}+3x_{3}=1$ $x_{1}+4x_{2}+9x_{3}=1$ $x_{1}+8x_{2}+27x_{3}=1$ have Only one solution. Two solutions. Infinitely many solutions. No solutions

asked Oct 15, 2015 in Linear Algebra by makhdoom ghaya Boss (41.1k points) | 292 views

+20 votes

4 answers

19

GATE2015-3-33
If the following system has non-trivial solution, $px + qy + rz = 0$ $qx + ry + pz = 0$ $rx + py + qz = 0$, then which one of the following options is TRUE? $p - q + r = 0 \text{ or } p = q = -r$ $p + q - r = 0 \text{ or } p = -q = r$ $p + q + r = 0 \text{ or } p = q = r$ $p - q + r = 0 \text{ or } p = -q = -r$

asked Feb 15, 2015 in Linear Algebra by jothee Veteran (115k points) | 2.6k views

+10 votes

3 answers

20

GATE2004-IT-6
What values of x, y and z satisfy the following system of linear equations? $\begin{bmatrix} 1 &2 &3 \\ 1& 3 &4 \\ 2& 2 &3 \end{bmatrix} \begin{bmatrix} x\\y \\ z \end{bmatrix} = \begin{bmatrix} 6\\8 \\ 12 \end{bmatrix}$ $x = 6$, $y = 3$, $z = 2$ $x = 12$, $y = 3$, $z = - 4$ $x = 6$, $y = 6$, $z = - 4$ $x = 12$, $y = - 3$, $z = 0$

asked Nov 2, 2014 in Linear Algebra by Ishrat Jahan Boss (19.1k points) | 1k views

+22 votes

3 answers

21

GATE1996-1.7
Let $Ax = b$ be a system of linear equations where $A$ is an $m \times n$ matrix and $b$ is a $m \times 1$ column vector and $X$ is an $n \times1$ ... has a unique solution. The system will have only a trivial solution when $m=n$, $b$ is the zero vector and $\text{rank}(A) =n$.

asked Oct 9, 2014 in Linear Algebra by Kathleen Veteran (59.8k points) | 2.4k views

+17 votes

5 answers

22

GATE2014-1-4
Consider the following system of equations: $3x + 2y = 1 $ $4x + 7z = 1 $ $x + y + z = 3$ $x - 2y + 7z = 0$ The number of solutions for this system is ______________

asked Sep 26, 2014 in Linear Algebra by jothee Veteran (115k points) | 3k views

+1 vote

0 answers

23

GATE1998-9
Derive the expressions for the number of operations required to solve a system of linear equations in $n$ unknowns using the Gaussian Elimination Method. Assume that one operation refers to a multiplication followed by an addition.

asked Sep 26, 2014 in Linear Algebra by Kathleen Veteran (59.8k points) | 220 views

+14 votes

3 answers

24

GATE1998-1.2
Consider the following set of equations $x+2y=5\\ 4x+8y=12\\ 3x+6y+3z=15$ This set has unique solution has no solution has finite number of solutions has infinite number of solutions

asked Sep 26, 2014 in Linear Algebra by Kathleen Veteran (59.8k points) | 1.5k views

+10 votes

2 answers

25

GATE2005-48
Consider the following system of linear equations : $2x_1 - x_2 + 3x_3 = 1$ $3x_1 + 2x_2 + 5x_3 = 2$ $-x_1+4x_2+x_3 = 3$ The system of equations has no solution a unique solution more than one but a finite number of solutions an infinite number of solutions

asked Sep 21, 2014 in Linear Algebra by gatecse Boss (18.2k points) | 1.1k views

+15 votes

4 answers

26

GATE2004-71
How many solutions does the following system of linear equations have? $-x + 5y = -1$ $x - y = 2$ $x + 3y = 3$ infinitely many two distinct solutions unique none

asked Sep 19, 2014 in Linear Algebra by Kathleen Veteran (59.8k points) | 1.5k views

+17 votes

2 answers

27

GATE2003-41
Consider the following system of linear equations ... are linearly dependent. For how many values of $\alpha$, does this system of equations have infinitely many solutions? $0$ $1$ $2$ $3$

asked Sep 17, 2014 in Linear Algebra by Kathleen Veteran (59.8k points) | 2.7k views

+16 votes

2 answers

28

GATE2008-3
The following system of equations $x_1 + x_2 + 2x_3 = 1$ $x_1 + 2x_2 + 3x_3 = 2$ $x_1 + 4x_2 + αx_3 = 4$ has a unique solution. The only possible value(s) for $α$ is/are $0$ either $0$ or $1$ one of $0, 1$, or $-1$ any real number

asked Sep 11, 2014 in Linear Algebra by Kathleen Veteran (59.8k points) | 2.3k views

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