TermProjectNotes.txt

====
Graph takes in a plot, which takes in a polynomial to generate the pairlist, which takes in a string and is made of terms

possible upgrades:
Have this be valid
version 2.0 allow parentheses in polynomials 
* It's doable. if p is a polynomial u is another polynomial then it's simply a multiplication and addition of polynomials in the same vein
as any other stack or decision tree problem. Just keep reading in terms til you reach a parentheses, then decide what to do next.
trig term extends term
Cartesian Graph extends Graph
division of polynomials
powers of polynomials
chain rule, product rule, quotient rule
upgrade term to have multiple variables
upgrade derive to derive in terms of different variables
* ^([+-]?\d*\.?\d*)([a-zA-Z]?\^?[+-]?\d*?\.?\d*?)*$ 
* check if a valid string.
* After that I'd need to extract every valid string by using Matcher.find() and a while loop
3^3 currently throws an error when it should evaluate to 9
* then again, it could cause some ambiguity
* (3^3)x^3
* 3^3x 
* In the future, polynomial needs to process those elements individually
* 3^3 is basically term t to the power of term 3
* in this sense, 3t ^ 3t is valid
* This will make the program more flexible
This program needs a rewrite from the top down.
* If I am no longer processing 2 variables, then term and even polynomial shouldn't be handling text processing.
* The question comes down to whether I want to process each polynomial as such: 
   * polynomial ("3x^4+2x^2"), term(3,4), term(2,2) OR polynomial("3x^4+2x^2"), term("3x^4"),term(2x^2)
   * the problem arises when seperating the terms. "^" is currently valid, a
   
   nd 3^3 isn't
   * If i process ^ as an operator rather than part of a polynomial, it allows more options. However 3x^4x will be valid.
   
==Catching Multiple Exceptions:
http://docs.oracle.com/javase/7/docs/technotes/guides/language/catch-multiple.html

catch (Exception1 | Exception2 e) {
}

==Exception Handling:

==java.lang.Math:
https://docs.oracle.com/javase/7/docs/api/java/lang/Math.html

==DecimalFormat:
http://javadevnotes.com/java-double-to-string-examples#p1

import java.lang.DecimalFormat;

DecimalFormat d= new DecimalFormat(#0.000); // -30 will display -30.000
DecimalFormat d2= new DecimalFormat(+#.##); // 30 will display +30
d.format(number)


==Regex - Capture Groups in Java: 
http://stackoverflow.com/questions/17969436/java-regex-capturing-groups

import java.util.regex.Pattern;
import java.util.regex.Matcher;

Pattern p = Pattern.compile("Regex");
Matcher m = p.matcher("String");

//if(m.matches()) OR 
if(m.find()) {
	m.group(1);
}

==Regex: 
https://regexone.com/lesson/excluding_characters?
https://regex101.com/
http://stackoverflow.com/questions/17969436/java-regex-capturing-groups
Regex Golf