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Summary Core Pure 1 - Matrices notes (9FM0)
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12 page document which covers all of the notes and includes examples needed for matrices and linear transformations for the Further Maths A-level
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Matrix Array of elementsDescribe size of a matrix using N of rows and
columns
square matrix N of rows and columns are the
same
zero matrix all elements are zero
identity matrix square matrix where
elements on the leading diagonal
e9 toplefts are all9 and all other
e p elements 0
are
denoted of
I where he describes size
When or subtracting matrices
adding
add or subtract corresponding elements
You can only add or subtract matrices
that are the same size
additively comfortable
, s C dy f
l Cs L's
When multiplying a matrix by a scalar
multiply every element by that scalar
Eg A 3 find 2A
At A
4 3 L 2A
Matrixnaultiplication
Matrices can be multiplied together if
N ofcolumns in est matrix Nsfrows in 2ndmatrix
Theproduct matrix will
have
same N'ofrows as Pst matrix and same
N of columns as 2nd matrix
AB C A n T
usetonbe.mgYfgipeHcativeh Be.m
xk
e i n XK
AB BA
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