HP HP-28S - Page 116

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