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24 Getting started
Math keys
The most common math functions have their own keys on
the keyboard (or a key in combination with the
S key).
Example 1: To calculate SIN(10), press e10 and
press
E
. The answer displayed is –0.544… (if your
angle measure setting is radians).
Example 2: To find the square root of 256, press
Sj 256 and press
E
. The answer displayed
is 16. Notice that the
S key initiates the operator
represented in blue on the next key pressed (in this case √
on the
j key).
The mathematical functions not represented on the keyboard
are on the
Math, CAS, and Catlg menus (see chapter 21,
“Functions and commands”, starting on page 305).
Note that the order in which you enter operands and
operators is determined by the entry mode. By default, the
entry mode is textbook, which means that you enter
operands and operators just as you would if you were
writing the expression on paper. If your preferred entry
mode is Reverse Polish Notation, the order of entry is
different. (See chapter 2, “Reverse Polish Notation (RPN)”,
starting on page 47.)
Math
template
The math template key (F)
helps you insert the framework
for common calculations (and for
vectors, matrices, and
hexagesimal numbers). It
displays a palette of pre-formatted outlines to which you
add the constants, variables, and so on. Just tap on the
template you want (or use the arrow keys to highlight it
and press
E). Then enter the components needed
to complete the calculation.