HP 50G, User Manual

Page: 69 / 887

Page 2-9
Θ
Press the right arrow key,
™
, until the cursor is to the right of the x
Θ
Type
Q2
to enter the power 2 for the x
Θ
Press the right arrow key,
™
, until the cursor is to the right of the y
Θ
Press the delete key,
ƒ
, once to erase the characters y.
Θ
Type
~„x
to enter an x
Θ
Press the right arrow key,
™
, 4 times to move the cursor to the right of
the *
Θ
Type
R
to enter a square root symbol
Θ
Type
„Ü
to enter a set of parentheses (they come in pairs)
Θ
Press the right arrow key,
™
, once, and the delete key,
ƒ
, once, to
delete the right parenthesis of the set inserted above
Θ
Press the right arrow key,
™
, 4 times to move the cursor to the right of
the b
Θ
Type
„Ü
to enter a second set of parentheses
Θ
Press the delete key,
ƒ
, once, to delete the left parenthesis of the set
inserted above.
Θ
Press
`
to return to normal calculator display.
The result is shown next:
Notice that the expression has been expanded to include terms such as
|R|, the absolute value, and SQ(b
⋅
R), the square of b
⋅
R. To see if we can
simplify this result, use FACTOR(ANS(1)) in ALG mode:
Θ
Press
„˜
to activate the line editor once more. The result is now: