Matrix Computation Quiz

Two matrices having dimensions ( r1 * c1 ) and ( r2 * c2 ) can be multiplied only if,

• c1 = c2

• c1 = r2

• r1 = c2

• r1 = r2

What is the dimension of the matrix which is found after multiplying two matrices of dimensions ( r1 * c1 ) and ( r2 * c2 ) ?

• r1 * c2

• c1 * r2

• r1 * r2

• c1 * c2

Does the multiplication of 3 matrices of ( 3 x 3 ) follow the associative property?

• No, they do not follow associativity

• Yes, multiplication of these matrices follow associative property

• It depends on the matrix given.

• There is no such property

What is data science primarily concerned with?

• Analyzing and interpreting data

• Collecting data only

• Storing data in data base mentioned above

If and det(A)=0 then rank of a matrix A is

• Greater than or equal to 3

• Strictly less than 3

• Less than or equal to 3

• Strictly greater than 3

The eigenvalues of below given matrix are

• 19,5,37

• 19,5,37

• 2,3,7

• 3,5,37

If one of the eigenvalues of A nn is zero, it implies

• The solution to AX C system of equations is unique

• The determinant of A is zero

• The solution to AX 0 system of equations is trivial

• The determinant of A is nonzero

When every entity of a geometric model remains parallel to its initial position, the transformation is called as ___________ .

• scaling

• translation

• rotation

• mirror

Positive values for the rotation angle ϴ defines ___________ .

• counterclockwise rotations about the end points

• counterclockwise translation about the pivot point

• counterclockwise rotations about the pivot point

• none of the above

If the values of the scaling factors sx and sy < 1, then ___________ .

• it reduces the size of the object

• it increases the size of the object

• it stunts the shape of an object

• none of the above