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3.` Enter 3 in level 1
5.` Enter 5 in level 1, 3 moves to y
3.` Enter 3 in level 1, 5 moves to level 2, 3 to level 3
3.* Place 3 and multiply, 9 appears in level 1
Y 1/(3
×3), last value in lev. 1; 5 in level 2; 3 in level 3
- 5 - 1/(3
×3) , occupies level 1 now; 3 in level 2
* 3
× (5 - 1/(3×3)), occupies level 1 now.
23.`Enter 23 in level 1, 14.66666 moves to level 2.
3.Q Enter 3, calculate 23
3
into level 1. 14.666 in lev. 2.
/ (3
× (5-1/(3×3)))/23
3
into level 1
2.5 Enter 2.5 level 1
!¸ e
2.5
, goes into level 1, level 2 shows previous value.
+ (3
× (5 - 1/(3×3)))/23
3
+
e
2.5
= 12.18369, into lev. 1.
R
√((3× (5 - 1/(3×3)))/23
3
+
e
2.5
) = 3.4905156, into 1.
Although RPN requires a little bit more thought than the algebraic (ALG) mode,
there are multiple advantages in using RPN. For example, in RPN mode you
can see the equation unfolding step by step. This is extremely useful to detect a
possible input error. Also, as you become more efficient in this mode and learn
more of the tricks, you will be able to calculate expression faster and will much
less keystrokes. Consider, for example the calculation of (4
×6 - 5)/(1+4×6 - 5).
In RPN mode you can write:
4 ` 6 * 5 - ` 1 + /
obviously, even In RPN mode, you can enter an expression in the same order as
the algebraic mode by using the Equation writer. For example,
‚OR3.*!Ü5.-
1/3.*3.
———————
/23.Q3™™+!¸2.5`
The resulting expression is shown in stack level 1 as follows:
5.2
3
23
33
1
53
e+
⋅
−⋅
⎟
⎠
⎞
⎜
⎝
⎛
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