Real number functions in the MTH menu
The MTH („´) menu include a number of mathematical functions
mostly applicable to real numbers. With the default setting of CHOOSE
boxes for system flag 117 (see Chapter 2), the MTH menu shows the
The functions are grouped by th type of argument (1. vectors, 2. matrices,
3. lists, 7. probability, 9. complex) or by the type of function (4. hyperbolic,
5. real, 6. base, 8. fft). It also contains an entry for the mathematical
constants available in the calculator, entry 10.
In general, be aware of the number and order of the arguments required
for each function, and keep in mind that, in ALG mode you should select
first the function and then enter the argument, while in RPN mode, you
should enter the argument in the stack first, and then select the function.
Using calculator menus
1. We will describe in detail the use of the 4. HYPERBOLIC.. menu in this
section with the intention of describing the general operation of
calculator menus. Pay close attention to the process for selecting
2. To quickly select one of the numbered options in a menu list (or
CHOOSE box), simply press the number for the option in the keyboard.
For example, to select option 4. HYPERBOLIC.. in the MTH menu,
simply press 4.
Hyperbolic functions and their inverses
Selecting Option 4. HYPERBOLIC.. , in the MTH menu, and pressing @@OK@@,
produces the hyperbolic function menu: