13/Specifications - Casio FX-180PA Manual

~
~
~
~
~
~
0f
❑2
~
(]
©
©
2.
~ 8.
~ 8.
e,
18.
156.
e,
450.
e Remarks for execution of integrals
* If you press
la
during execution of integral (nothing is displayed), the execution will be
aborted and the state selected by the depression of Qt entered.
- If no functionJ(r) is defined (written in), the calculator will carry out integral for j(x)=x.
-It is normal to set the angular mode to "a" when executing integral of trigonometrics.
•Integral approximated by the Simpson's rule may take much execution time to raise the
accuracy of result. Error may be large even when much execution time has been con-
sumed. If the number of significant digits of result is smaller than one, error termination
occurs ("-E-" displayed).
In such cases, dividing the integral interval will reduce execution time and raise accuracy:
1. If the result varies greatly when the integral interval is moved slightly:
Divide the interval into sections and sum up the results obtained in the sections.
2. For a periodic function or if the value of integral becomes positive or negative depending
on the interval:
Calculate for each period or separately for the sections where the result of integral
is positive from where the result is negative, and sum up The results obtained.
3. If long execution time is due to the form of the function defined:
Divide the function, if possible, into terms, execute integral for each term separately,
and sum up the results.
13/SPECIFICATIONS
BASIC OPERATIONS
4 basic calculations, constants for + / - / x / = /x'/x"/AND/OR/XOR/XNOR, parenthe-
sis calculations and memory calculations.
BUILT-IN FUNCTIONS
Trigonometric/inverse trigonometric functions (with angle in degrees, radians or grads),
common/natural logarithms, exponential functions (common antilogarithms, natural
antilogarithms), powers, roots, square roots, cube roots, squares, reciprocals, factorials,
conversion of coordinate system (R -.P, P —A), permutations, combinations, random
number, r, fractions, percentages, binary, octal, decimal and hexadecimal calculations
and logical operations.
•41•