Difference between revisions of "User:Negativebplusorminus"

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A AoPS member, National MathCounts qualifier, and USAJMO qualifier.
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A AoPS member.
==Contest Results==
 
===MathCounts===
 
In 2011, as a 7th grader, I qualified for the State Countdown Round.  In 2012, as an 8th grader, I qualified for National MathCounts.
 
 
 
In the National competition, I scored in the top 56.
 
 
 
===AMCs===
 
2012: 117 on AMC 10A, 127.5 on AMC 10B, 8 on AIME, 207.5 index for USAJMO.  The cutoff was a 204.5, so I qualified for the USAJMO.  However, I only got a 5 on the USAJMO.  That thing is hard.
 
 
 
==negativebplusorminus==
 
My username is from the [[Quadratic formula | quadratic formula]], which states that the roots of the equation <math>ax^2+bx+c=0</math> are
 
<cmath>x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}</cmath>
 
which, when read aloud, is "negativebplusorminus..."
 
 
 
==Equations for the Roots of the Complex==
 
<cmath>\sqrt{a+bi}=\sqrt{\frac{a+\sqrt{a^2+b^2}}{2}}+i\sqrt{\frac{-a+\sqrt{a^2+b^2}}{2}}</cmath>
 
I derived that equation myself, and I am quite proud of it.  I have a similar one for the fourth roots of <math>a+bi</math> which can be derived from inputting that equation into itself.  I have also found various roots of unity in their radical forms during my spare time.
 
==Spirographs==
 
I have created a great number of spirographs, each interesting and unique.  More can be found on my [http://www.artofproblemsolving.com/Forum/blog.php?u=93546& AoPS blog] (but you might have to look through a few pages of other stuff, too).  To view the entire collection, please visit [http://www.negativebplusorminus.blogspot.com negativebplusorminus.blogspot.com], but again, you might have to scroll down a bit.  Here are some samples:
 
<asy>
 
string s="Spirograph by user negativebplusorminus of the Art of Problem Solving forum. Please to not plagiarize; it is illegal and insulting.";
 
import graph;
 
size(300);
 
string s="for(real t,real u){return t^2u^3, store as f};";
 
real f(real t) {return t+log(t^2+t^4+1);}
 
int p=15;
 
int n=45+p;
 
path g=polargraph(f,-200pi,200pi,10000, operator --);
 
draw(g, orange);</asy>
 
<asy>
 
import graph;
 
size(300);
 
string s="for(real t,real u){return t^2u^3, store as f};";
 
real f(real t) {return floor(t);}
 
int p=25;
 
int n=45+p;
 
path g=polargraph(f,-100pi,100pi,281, operator --);
 
draw(g, blue);</asy>
 
 
 
==Inspirographs==
 
Another amazing creation of mine.  More can be found [http://www.artofproblemsolving.com/Forum/blog.php?u=93546& here] (but you might have to look through a few pages of other stuff, too).
 
To view the entire collection, please visit [http://www.negativebplusorminus.blogspot.com negativebplusorminus.blogspot.com] in the near future (the site will be updated soon).  Below are a few samples.
 
<asy2>
 
import graph3;
 
import grid3;
 
import palette;
 
size(400,300,IgnoreAspect);
 
defaultrender.merge=true;
 
real f(pair z) {return sin(z.y)*(z.x^2+1)^(0.1*log(z.y^2+1));}
 
surface s=surface(f,(-30,-30),(30,30),70,Spline);
 
s.colors(palette(s.map(zpart),Rainbow()));
 
draw(s,render(compression=Low,merge=true));
 
grid3(XYZgrid);</asy2>
 
<asy2>
 
import graph3;
 
import grid3;
 
import palette;currentprojection=orthographic(1,5,0.2);
 
size(400,300,IgnoreAspect);
 
defaultrender.merge=true;
 
real f(pair z) {return sin(z.x^2+z.y^2);}
 
surface s=surface(f,(-2.95,-2.95),(2.95,2.95),70,Spline);
 
s.colors(palette(s.map(zpart),Rainbow()));
 
draw(s,render(compression=Low,merge=true));
 
grid3(XYZgrid);</asy2>
 

Latest revision as of 21:29, 24 July 2016

A AoPS member.