HP HP-25 - Constant Arithmetic

For example, you could work the problem above by beginning
at the left side of the equation and simply working through it in
left-to-right order. All problems cannot be solved using left-to-
right order, however, and the best order for solving any prob-
lem is to begin with the innermost parentheses and work out-
ward. So, to solve the problem above:
Press Display
;
4
=] Intermediate answer for (3 + 4).
5 [5
2 (2
=] Intermediate answer for (5 + 2).
= Intermediate answer for
B+4)-(05+2).
4
3
Intermediate answer for (4 X 3)
Intermediate answer for
(G+4)—(5+2)+(4x3).
s 3
20
Intermediate answer for (3 x .213).
g
5 5. Thefirstnumberis keyed in.
The final answer.
Constant Arithmetic
You may have noticed that whenever the stack drops because
of a two-number operation (not because of [ ), the number
in the T-register is reproduced there. This stack operation can
be used to insert a constant into a problem.