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
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 ]
Spell the Principal of DCC's surname
A-R-G-A-L-L
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
If the determinant of a MATRIX = 0 , this MATRIX is known as ...
SINGULAR
If A.X = B, has a unique solution then...
det (A) is...
not ZERO
At the DCC Celebration of Sound...
which of these students all blew their instruments ?
A. Ethyn, Lening and Josh
B. Ben G. , Benji A., Den E
C. Michaelia, Beth, Kate, Priscilla
D. Skyler, Lening, Denny
D
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 ]
If 2A + B = C
then A =
0.5 (C - B)
S.M.C.S.I. is an acronym for what ?
Spesh Maths
Curiosity Sparked Investigation
Which students included MATRICES in their investigations ?
A. Kevin and Joshua
B. Janice and Lening
C. Kate and Beth
D. Skyler and Ashley
B.
Lening used Matrices to describe traffic flow
Janice's talk about Tetris used matrices to talk about transformations.
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 determinant of this MATRIX :
[ sin(x) cos(x)
- cos(x) sin(x) ]
1
If ax +by = m
and cx + dy = n
does NOT have a unique solution then...
These 2 lines are:
PARALLEL
What did the 4 DCC Houses used to be called ?
COOK / STURT
FLINDERS / HUME
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
The inverse of the MATRIX exists for what values of b :
[ b 9
3 b ]
b = R / { - 3 sqrt3 , 3 sqrt3 }
If A . X = B
then X =
A-1 x B
Name a Maths Crimes
ANSWERS include:
Dividing by Zero / Square Rooting a Negative
Not Answering a Multi-Choice Question
Not Giving an Asymptote an Equation!