°, 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: (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 5key 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, x9, , , , x−1 : Powers, power roots, and reciprocals. Note that the input methods for x9, , , 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, x9, x−1. If you input 277, for example, the final 7will be ignored. To input 222 , input 27, press the B key, and then press 7.
: Function for performing numerical integration using the
for more information. See 8 .
: Function for approximation of the derivative based on the central
difference method. Natural Display input syntax is | d | ( f(x))x= a, while | |||
dx | |||||
Linear Display input syntax is | d | ( f(x), a, tol). tol specifies tolerance, | |||
dx | |||||
|
|
|
|
which becomes 1
b
: Function that, for a specified range of f(x), determines sum ( f(x))
x=a b
= f(a) + f(a+1) + f(a+2) + ...+ f(b). Natural Display input syntax is ( f(x)),
x=a
while Linear Display input syntax is 3( f(x), a, b). a and b are integers that can be specified within the range of
10.
Note: The following cannot be used in f(x), a, or b: Pol, Rec, °, d/dx, 3.
Pol, Rec : Pol converts rectangular coordinates to polar coordinates, while Rec converts polar coordinates to rectangular coordinates. See 11 .
Pol(x, y) = (r, θ) Rec(r, θ) = (x, y)
Rectangular | Polar |
Coordinates (Rec) | Coordinates (Pol) |
Specify the angle unit before performing calculations.
The calculation result for r and θ and for x and y are each assigned respectively to variables X and Y. Calculation result Θ is displayed in the range of −180° Θ 180°.