12 Answered Questions for the topic Determinants

09/08/19

Show that the determinant of | Row1: cosx cosz 1; Row 2: cosy 1 cosz; Row 3: 1 cosy cosx | = 0 when x + y + z = 2 pi

Show that the determinant of | cosx cosz 1 || cosy 1 cosz || 1 cosy cosx | is = 0 when x + y + z = 2 pi
Determinants French Prononciation Genre

03/21/19

Quelle est la règle pour utiliser «mon» avec des noms féminins?

Je suis brésilien et j'apprends le français avec l'aide d'un ami.Il y a quelques jours, quand j'ai dit : « ma expérience », mon ami m'a dit que la forme correcte est « mon expérience », même si «... more
Determinants Equation Matrix System

01/02/19

Algebra and Trigonometry

a ceramic tile designer has some odd lots of tiles in boxes. a particular box contains square, pentagon and hexagonal tiles. altogether there are 100 tiles. there are 20 more pentagonal tiles than... more

05/06/18

Find k such that the system of equations has no unique solution.

-2x -7y +1z=46x -5y -3z=14kx -2y -z=5   k=?   I need help understanding how to solve this problem.
Determinants

01/05/18

Determinant question

If det= |a b c|           | d e f|  =  4            |g h i|     then det= | a-9g   3b-27h   c-9i |                |  d       3e         f |            =?                |  g      3h       ... more

01/17/17

Determine whether or not the determinant is 0.

Given a 3 × 3 matrix B with real entries, suppose that the system of linear equations determined by  B(x1 x2 x3) = (0 1 1) (they should be column matrices.) has infinitely many solutions. Determine... more
Determinants

10/16/16

determinants

if A= (2 3 1)                  (1 2 1 )        ( 1-1-2)     and B=  (1 1 2 )        (0  2 1)                  ( 0 0 1)   find 2AB. also find the determinant for 2AB
Determinants Linear Equations

08/31/16

Need help with this equation ax+by=c^2 a+x/b=b+y/a , a<>o,b<>o

Determine for which values parameter x,y system equations with two unknowns have unique solution,inconsistent or infinitely many solutions.  ax+by=c^2 a+x/b=b+y/a , a≠o,b≠o

For which values parameter x,y system equations with two unknowns have unique solution,inconsistent or infinitely many solutions?

Determine for which values parameter x,y system equations with two unknowns have unique solution,inconsistent or infinitely many solutions.  ax+by=c^2  a+x/b=b+y/a , a≠o,b≠o   and another... more
Determinants Matrices

07/13/16

Find the value of x

a b ax+b b c bx+c = 0ax+b bx+c cFind value of x in this determinantThis is a 3X3 determinant which is equal to zero. A detailed working is expected.
Determinants Matrices

02/26/16

how do you find the value of x in this determinant equation?

4 -3  9 8  x -4 1  5  3

Volume of a Pyramid

Find the volume of a pyramid given its height is 138.8m and its base is 230.4m along the side   use the formula:           | x1  y1  z1  1|                                       | x2  y2  z2 ... more

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