HP (Hewlett-Packard) HP 33s ユーザーズマニュアル
15–12
Mathematics Programs
125
g
@
)
)
Sets T equal to 125.
63
g
@
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Sets P equal to 63.
X
D
/
)
)
Calculates dot product.
g
/
)
)
Calculates angle between
resultant force vector and lever.
resultant force vector and lever.
g
@
)
)
Gets back to input routine.
Solutions of Simultaneous Equations
This program solves simultaneous linear equations in two or three unknowns. It
does this through matrix inversion and matrix multiplication.
does this through matrix inversion and matrix multiplication.
A system of three linear equations
AX
+ DY + GZ = J
BX
+ EY + HZ = K
CX
+ FY + IZ = L
can be represented by the matrix equation below.
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L
K
J
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I
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A
The matrix equation may be solved for X, Y, and Z by multiplying the result matrix
by the inverse of the coefficient matrix.
by the inverse of the coefficient matrix.
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Z
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L
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J
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Specifics regarding the inversion process are given in the comments for the
inversion routine, I.
inversion routine, I.