Hp 49g Graphing Calculator Manuel d'utilisateur Page 138

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Representing a system as matrices
To solve a linear system, you represent the system in matrix form within
the numeric solver. In order to represent the system in matrix form, you
need to transpose the equations to a form where the independent
variables are to the left of the = sign, and the constant is on the right. For
example, consider the following set of equations:
2x-Sy + 1
3,r +2y -I
2
14
Before you attempt to solve this system, manipulate the equations to the
following form:
2x-Sy = -5
3a- + 2y = lb
These equations can be represented as a set of three matrices:
e a matrix that contains the variable coefficients
2 -8
3 2
a matrix that contains the constants
-5
15
® a matrix that contains the variables to solve for.
Wlren you solve this system, you specify the first two matrices and the
answers are returned in the third matrix.
Page 6-8
Solving equations
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