Scalar Multiplication (VCE SSCE General Mathematics): Flashcards
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Scalar (in matrix maths)
Scalar (in matrix maths)
A number
Scalar multiplication definition
Scalar multiplication definition
Multiplying every element in a matrix by a scalar
Dimensions after scalar multiplication
Dimensions after scalar multiplication
Stay the same as the original matrix
Order: scalar mult vs addition/subtraction
Order: scalar mult vs addition/subtraction
Do scalar multiplication first, then add/subtract
GST percentage (Australia)
GST percentage (Australia)
10%
Multiplier to add 10% GST
Multiplier to add 10% GST
Formula to increase by %
Formula to increase by %
Multiply by (1 + rac{x}{100})
Formula to decrease by %
Formula to decrease by %
Multiply by (1 - rac{x}{100})
Memory aid for 'scalar'
Memory aid for 'scalar'
Think 'scale' - scaling all values proportionally
where B = egin{bmatrix} -7 & 2 \ 6 & -3 end{bmatrix}
where B = egin{bmatrix} -7 & 2 \ 6 & -3 end{bmatrix}
egin{bmatrix} -35 & 10 \ 30 & -15 end{bmatrix}