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Matrices
Clement Radcliffe,Contributor
As
promised last week, we will proceed
to review matrices.
REMINDERS
- A
matrix is a rectangle array of numbers,
for example,
- The
above is a 2 x 3 matrix, with 2
x 3 representing the order.
- The
order identifies the number of rows
and columns, respectively.
Other
examples of matrices follow.
Please
determine the respective orders of
the following:
I
do hope that your answers are: (a)
2 x 2 (b) 2 x 1 (c) 1 x 3. An analysis
of the types of problems set by CXC
would suggest that the following are
the usual types set with respect to
matrices.
- Application
of the arithmetic operations to
matrices.
- Use
of matrices to solve simultaneous
equations.
- Matrix
transformation.
In
all these areas, the methods involved
are relatively straightforward. The
students who take time out to understand,
study and practise them experience
very little difficulty. The areas
providing most difficulty are:
- Multiplication
of matrices.
- Determining
the inverse of a matrix.
- Matrix
transformation.
BE
WARNED. BE PREPARED
Please
spend adequate time to ensure that
you are comfortable with them.
We
will now review application of arithmetic
operations to matrices.
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Alicia
Henry of Falmouth All-Age School
displays her first-place floral
arrangement piece during the
Trelawny 4-H Clubs Parish Achievement
Day, held last week at the Albert
Town High School.
- Photo by Richard Morais
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Clement
Radcliffe is the principal of Glenmuir
High School in May Pen.
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