HP 48gII - Manual (Page 76)

Page 2-18
Next, press the down arrow key ( ˜) to trigger the clear editing cursor
highlighting the 3 in the denominator of π 2 /3. Press the left arrow key ( š)
once to highlight the exponent 2 in the expression π 2 /3. Next, press the
delete key ( ƒ) once to change the cursor into the insertion cursor. Press
ƒ once more to delete the 2, and then 5 to enter a 5. Press the upper
arrow key (
—) three times to highlight the expression π 5 /3. Then, type
‚¹ to apply the LN function to this expression. The screen now looks
like this:
Next, we’ll change the 5 within the parentheses to a ½ by using these
keystrokes:
šƒƒ1/2
Next, we highlight the entire expression in parentheses an insert the square
root symbol by using:
————R
Next, we’ll convert the 2 in front of the parentheses in the denominator into a
2/3 by using:
šƒƒ2/3
At this point the expression looks as follows:
The final step is to remove the 1/3 in the right-hand side of the expression.
This is accomplished by using:
—————™ƒƒƒƒƒ
The final version will be:
In summary, to edit an expression in the Equation Writer you should use the
arrow keys (
š™—˜) to highlight expression to which functions will be
applied (e.g., the LN and square root cases in the expression above). Use the