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HP -28S Manual Page 116

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Associate the terms
(A:t
X) and
(2:t
X) in the sub expression
«A:t>D+(2:t>D),
using
A+
(associate right).
A+
r-----------------------~
Return to the main FORM menu.
I ENTER I
Step 3:
Merge
ax
and
2x.
Move the cursor to the second
+.
[+J
[+J
(+J
(+J
Here you want to act on the subexpression (
(AnD +( 2nD)
to com-
bine the coefficients of
::<.
Display the first row of manipulations for
+.
INEXTI
r----------------------,
«(A*B)+«A*X);(2*X")=
C)
_IDlIIIIImIIIlBllIalIIEDI
Combine the coefficients of :X:, using
1'1+
(merge right).
«(A*B)+«A+2);X"=C)
DDIIIDlIm.IlDlIalIIEDI
This accomplishes the goal of combining
(A:t)<)
and
(2:t:x:)
in a sin-
gle term
«
A
+2 ) :t)0 .
Exit FORM and return the modified equation to the stack.
ION
I
3 : ' (C+B)/A-3'
2:
'(3*B+C-2*A)/5'
1:
'A*B+(A+2)*X=C'
tDBJlEIiI:I~1imI1!Im11mm
9: Symbolic Solutions
115

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