A curve
y ax bx c
2
where a, b and c are constants, passes
through the points (2,11), (-1,-16) and (3,28).
(a) By using the above information, construct a system
containing three linear equations.
(b) Express the above system as a matrix equation
AX B.
(c) Find the inverse of matrix A by using the adjoint matrix
method. Hence, obtain the values of a, b and c.
(a)
Construct a system containing three linear equations.
(b)
(c)
Find the cofactor matrix:
The cofactor matrix is
The transpose of the cofactor matrix is
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