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Press the down arrow key (˜) to trigger the clear editing cursor. The screen
now looks like this:
By using the left arrow key (š) you can move the cursor in the general left
direction, but stopping at each individual component of the expression. For
example, suppose that we will first will transform the expression
π
2
/2 into the
expression LN(
π
5
/3) . With the clear cursor active, as shown above, press the
left-arrow key (š) twice to highlight the 2 in the denominator of
π
2
/2. 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 3 to enter a 3. At this point,
the screen looks as follows:
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