What is the MATRIX?
Who is the lead actor in the MATRIX movie series ?
KEANU REEVES
To add or subtract the MATRICES A and B, what is essential about their dimensions ?
A and B are identical dimensions
The determinant of this MATRIX :
[ a b
c d ]
ad - bc
When you keep multiplying a state matrix by a transition matrix but the values in the state matrix don't change... we call this ?
Equilibrium
(or Steady State)
What is the name of next year's Principal of DCC ?
Mrs. HALL
What is the name given to the values inside a matrix?
ELEMENTS
To multiply matrices A and B ,
what is a necessary requirement ?
the columns in A = the rows in B
The linear equations below can be expressed as a matrix equation A.X = B
3x - 2y = 6
x + 2y = 4
What is the Matrix A ?
[ 3 -2
1 2 ]
Which matrix would I multiply this matrix by to find the sum of EACH column ?
[ 12 3 4 0
3 2 1 5
-2 6 1 7
5 1 3 9 ]
PRE-MULTIPLY BY A SUMMING ROW MATRIX
[ 1 1 1 1]
What did the 4 DCC Houses used to be called ?
COOK / STURT
FLINDERS / HUME
What is the names for the HORIZONTAL and VERTICAL arrays?
ROWS and COLUMNS
The product of
A = [ 2 3 ]
and
B = [ 1
4 ]
[ 14 ]
The inverse of the MATRIX is:
[ 2 3
2 4 ]
[ 2 -3/2
-1 1 ]
what do the values on the TOP ROW of a Leslie Matrix tell you ?
the average number of females born for each "age level" of the female population
In last year's CAW, which house won ?
A. COOPER
B. BURROWS
C. FLYNN
D. CUTHBERT
D. CUTHBERT
What is the name of a MATRIX that when multipled by another matrix will shuffle the ROWS or COLUMNS?
A. BINARY MATRICES
B. TRANSPOSE MATRICES
C. PERMUTATION MATRICES
D. INVERSE MATRICES
C.Everybody's Shuffling !!
When you multiply matrices A and B ,
which are [ 2 x 3 ] and [ 3 x 4 ]
what is the dimensions of the product matrix ?
[ 2 x 4 ]
The transpose of this MATRIX :
[ 1 2
3 4 ]
[ 1 3
2 4 ]
If S5
was known to you , as was T
how would you find the state matrix S3 ?
multiply the inverse of T by S5 to get S4,
then do it again to get S3
In last year's OPENING CEREMONY, which teacher was used after an elaborate promotional POSTER scheme ?
Mr.HULKS
When you multiply a square MATRIX by its INVERSE MATRIX, the product is the...
IDENTITY MATRIX
When the elements of the diagonal of a SQUARE MATRIX are 1s, and the rest are 0s, this is called an:
IDENTITY MATRIX
An exam question might ask for you to create a matrix A which is 3 x 3 where the elements are found from the equation 2i - 3j (i is the row number, j is the column number)
FIND THIS MATRIX on your CAS ...
ready , set , CAS !!
[ -1 -4 -7
1 -2 -5
3 0 -3 ]
Which of these statements is NOT true ?
A. A transition matrix must be a SQUARE matrix
B. A permutation matrix must have only 1 "one" in every row, and every column
C. A binary matrix has 1s and 2s in it
D. A dominance matrix can help you work out the ranking of teams into a ladder.
Which of these 2024 CAW dramas is an incorrect match of a superhero with the genre ?
A. Spiderman in Ancient Greece
B. Superman in 1950's rock'n' roll
C. The Incredible Hulk in 60s Beach Culture
D. Batman in 1920s Gangster era
B. Superman in 1950's rock'n' roll
(Elvis could NOT fly !!)