HP 50G

Page 2-13
Suppose that now you want to add the fraction 1/3 to this entire expression,
i.e., you want to enter the expression:
First, we need to highlight the entire first term by using either the right arrow
(™) or the upper arrow (—) keys, repeatedly, until the entire expression is
highlighted, i.e., seven times, producing:
Once the expression is highlighted as shown above, type +1/3 to
add the fraction 1/3. Resulting in:
NOTE: Alternatively, from the original position of the cursor (to the right of the 2
in the denominator of
π
2
/2), we can use the keystroke combination ‚—,
interpreted as (‚ ‘ ).
3
1
)
2
5(25
5
2
+
+⋅+
π