(User manual)

cosh Calculates the hyperbolic cosine of a value.
cosh
-1
Calculates the inverse hyperbolic cosine of a value. (Available when the 2nd button is
tapped.)
tanh Calculates the hyperbolic tangent of a value.
tanh
-1
Calculates the inverse hyperbolic tangent of a value. (Available when the 2nd button is
tapped.)
e
x
Tap after entering a value to raise the constant “e” (2.718281828459045...) to the power
of that value.
2
x
Calculates 2 to the power of the displayed value. For example, 10 2
x
= 1024. (Available
when the 2nd button is tapped.)
Rad Changes mode to express trigonometric functions in radians.
Deg Changes mode to express trigonometric functions in degrees.
π Enters the value of π (3.141592653589793...).
EE An operator that multiplies the currently displayed value by 10 to the power of the next
value you enter.
Rand Returns a random number between 0 and 1.
Notes
Writing and Reading Notes
Notes are listed by date added, with the most recent note at the top. You can see the
first few words of each note in the list.
Add a note: Tap , then type your note and tap Done.
Read a note: Tap the note. Tap or to see the next or previous note.
Edit a note: Tap anywhere on the note to bring up the keyboard.
Delete a note: Tap the note, then tap .
Emailing Notes
Email a note: Tap the note, then tap .
To email a note, iPhone must be set up for email. See “Setting Up Email Accounts” on
page 48.
96 Chapter 7 More Applications