Polynomial Math is a subset of mathematics dealing with mathematical expressions constructed from variables and constants using only the operations of addition, subtraction, multiplication, and non-negative integer exponents. Any polynomial math question should be programming related.
Questions tagged [polynomial-math]
630 questions
0
votes
1 answer
Numpy.ma polyfit function for masked arrays crashes on integer input
The numpy polynomial fit function for masked arrays, ma.polyfit, crashes on integer iput:
import numpy.ma as ma
x = ma.arange(2)
y = ma.arange(2)
p1 = ma.polyfit(np.float32(x), y, deg=1)
p2 = ma.polyfit( x , y, deg=1)
The last line…
Rolf Bartstra
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0
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2 answers
Finding integer coordinates between 2 points
I would like to find each integer coordinate point between 2 set of coordinate points.
For example, I need the coordinates between (2,15) (6,15). It should give me (3,15) (4,15) (5,15)
. I cannot find any math formula or c++ code that does this.
I…
rasul1719435
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0
votes
1 answer
polyfit function conversion from matlab to r
So matlab help has the following description :
[P, S, MU] = POLYFIT[X,Y,N]
I know what the input variables mean, but i cant calculate the MU "manually". The MU i need for calculating the area of a peak.
I need to convert source code from MATLAB to…
alap
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0
votes
1 answer
How to construct a polynomial from a string representation such as "x 3x^2 5x^3".. using arrayList
How to construct a polynomial from a string representation such as "x + 3x^2 + 5x^3".. using an arrayList
0
votes
4 answers
polynomial multiplication using fastfourier transform
I am going through the above topic from CLRS(CORMEN) (page 834) and I got stuck at this point.
Can anybody please explain how the following expression,
A(x)=A^{[0]}(x^2) +xA^{[1]}(x^2)
follows from,
n-1 `
Σ a_j…
mawia
- 9,169
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0
votes
1 answer
How to solve a polynomial equation with genetic algorithms in java?
For my first class project I need to understand the basics of how genetic algorithms work (no big deal), I also need to find an example of a number optimization problem which is solved by using genetic algorithms in Java, and be able to explain how…
Ramrod
- 378
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0
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1 answer
2d polynomial fitting to table data MATLAB
I am trying to use 2D polynomial fitting for my table data, my data format is exactly like the link below:
http://www.mathworks.de/help/toolbox/curvefit/brx2ldg-1.html#bso46rp-1
I mean I have vector X with length n, Y with length m and m*n Matrix Z,…
user1331843
- 123
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- 15
0
votes
0 answers
Roots of rational equation with multiple variables?
Let's say we have a rational polynomial in k variables. We are only interested in rational solutions. If k = 1, name the variables {x}, if k = 2, name them {x,y}.
For k = 1, it can be done very fast. The Rational Root Theorem gives a set of…
Johannes
- 2,901
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1 answer
How to return the real/imaginary part of a symbolic polynomial in MATLAB?
Given a polynomial such as (a+b*i)*c+i, where a, b, c are defined as symbolic elements to represent three real values and i is the imaginary unit, how to return the real part and imaginary part of this polynomial?
datcn
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0
votes
1 answer
Problems with Polynomial.java zeros method
Here is the location of the source code (using Dropbox).
The problem is in the fact that it doesn't evaluate zeros properly.
For example: x^2-2x-8 should equal the zeros of {-4, 2}, but instead I get a long exponential value like…
Mohit Deshpande
- 53,877
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votes
1 answer
Compilation Error for an array of rational polynomials
I am coding a matrix, whose entries are polynomials with rational coefficients. Any help would be greatly appreciated.
I have rational number and rational polynomial declared:
rational_number.h
struct long_rational{
long p;
long q;
…
user103500
- 77
- 1
- 8
-1
votes
2 answers
Template Error in c++
#include
using namespace std;
template
struct term
{
T coef;
int exp;
};
template
class Polynomial
{
public:
class term *termarray;
int capacity;
int terms;
Polynomial(int size);
…
Anirudh Gali
- 19
- 5
-1
votes
1 answer
Build polynomial function from a set of intervals denoting y >= 0
I have a set of ordered, non-overlapping intervals that do not share boundaries, e.g.:
long[][] intervals = new long[][]{
new long[]{ 2, 3 },
new long[]{ 5, 10 },
new long[]{ 25, 1200 },
...
}
Currently I use a binary search…
Sebastian Barth
- 4,079
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- 59
-1
votes
2 answers
Evaluate the Binomial polynomial expression in R
I need to calculate the binomial polynomial expression in r. I can calculate the polynomial expression using polynomial() function in r. But on top of evaluating the expression in polynomial, I want the expression must hold the binomial expression…
Neha
- 91
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-1
votes
1 answer
splitting terms in a polynomial expression without external libraries like sympy
Say i inputted "1+2x+3x^2" or "1-2x+3x^2"
How do i make a function that splits and makes a list of each term like [1, 2x, 3x^2] or [1, -2x, 3x^2].
I have been stumped at this for a while, for now the function im using currently, seperates only at…
user13392187