Function
Calculations
For actual operations using each function, see the “Examples” section following the list below.
π: π is displayed as 3.141592654, but π = 3.14159265358980 is used for internal calculations.
e: e is displayed as 2.718281828, but e = 2.71828182845904 is used for internal calculations.
sin, cos, tan, sin−1, cos−1, tan−1 : Trigonometric functions. Specify the angle unit before performing calculations. See 
1.
sinh, cosh, tanh, sinh−1, cosh−1, tanh−1 : Hyperbolic functions. Input a function from the menu that appears when you press w. The angle unit setting does not affect calculations. See 
2.
°, r, g : These functions specify the angle unit. ° specifies degrees, r radians, and g grads. Input a function from the menu that appears when you perform the following key operation: 1G(DRG'). See 
3.
$, %: Exponential functions. Note that the input method is different depending upon whether you are using Natural Display or Linear Display. See 
4.
log: Logarithmic function. Use the l key to input logab as log (a, b). Base 10 is the default setting if you do not input anything for a. The & key also can be used for input, but only while Natural Display is selected. In this case, you must input a value for the base. See 
5.
ln: Natural logarithm to base e. See 
6.
x2, x3, x^, ), #, ", x−1 : Powers, power roots, and reciprocals. Note that the input methods for x^, ), #, and "are different depending upon whether you are using Natural Display or Linear Display. See 
7.
Note: • The following functions cannot be input in consecutive sequence: x2, x3, x^, x−1. If you input 2ww, for example, the final w will be ignored. To input 222 , input 2w, press the d key, and then press w(B).
• x2, x3, x−1 can be used in complex number calculations.
: Function for performing numerical integration using the
method. Natural Display input syntax is ∫ab f(x), while Linear Display input
syntax is ∫( f(x) , a, b, tol). tol specifies tolerance, which becomes 1 ⋅ 
8.
F: Function for approximation of the derivative based on the central
d
difference method. Natural Display input syntax is dx ( f(x)) x= a, while Linear Display input syntax is d ( f(x), a, tol). tol specifies tolerance,
dx
which becomes 1 ⋅ 
9.
b
8: Function that, for a specified range of f(x), determines sum Σ ( f(x))
x=a b
= f(a) + f(a+1) + f(a+2) + ...+ f(b). Natural Display input syntax is Σ ( f(x)),
x=a
while Linear Display input syntax is Σ( f(x), a, b). a and b are integers that