Questions tagged [equation-solving]
763 questions
-3
votes
1 answer
MATLAB Convert a matrix of unknown size to a system of equations?
I have a square matrix of coefficients f, and would like to be able to solve these algebraically as a system of simultaneous equations (all the equations f[i,1] + f[i,2]x + ... + f[i, n]z = T for the same T)- the problem is that I don't know how…
Uzai
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- 2
-3
votes
1 answer
How to solve equations with 3 variables?
I have these 2 equations, found after a bunch of regression analyses studying the relation between the final value and a, b, and c individually. How do I solve them to find the values for a, b, and c?
0.76 = 25a * 15.25b * 11500c
0.70 = 26a * 13b *…
user3201048
- 17
- 4
-3
votes
1 answer
Java Math Equation
seems like I just have trouble getting the equation written down but im dealing with this question :
Write a program that prompts the user to enter the
side of a hexagon and displays its area. The formula for computing the area of a
hexagon…
Moiz Khan
- 29
- 2
-3
votes
1 answer
def model_func(t, a, b, c):
I am fitting a function to a power law by using
def model_func(t, a, b, c):
return a * np.exp(-b * t) + c
opt_parms, parm_cov = sp.optimize.curve_fit(model_func, x1, y1, maxfev=1000) …
user3113106
- 33
- 3
-4
votes
1 answer
How to parse and solve equation string in Java?
I have a string like 3x^2+5X+7 and what I want to do is, get x value from the user and make the program solve this equation. I couldn't figure it out how I am gonna do this so far. I would be really glad if you help me.
-4
votes
2 answers
Solving Equations in Perl
How should I solve my equations in Perl?
I know binary search is one solution (and perhaps pretty fast for my equations) but I would like to know if there is a ready to use solutions such as math packages or libraries so that I can use them instead…
Ali Abbasinasab
- 382
- 3
- 13
-5
votes
2 answers
Fast way to calculate solution of a triangular equation c++
What is the fastest way of calculation x in below equation in c++?
sin (a x) + b sin (c x)== d * x + e
I don't need a very exact value of x. the approximation with 0.001 is acceptable. I also know an interwal for the solution [x_0,x_1].
I know…
Oliver Range
- 13
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-5
votes
1 answer
How to random more than one math problems' operators and check the correct answer in java
import java.io.*;
public class AssignmentMT {
public static void main(String[] args) throws IOException{
// TODO Auto-generated method stub
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int number1, number2,…
Shirley
- 3
- 2
-5
votes
1 answer
Lotto breaker program whats the equation
I was curious as to what it would take to mathematically solve lotto. Just For Fun.
So I decided to find out exactly how many tickets I would need to buy, if I wanted to win the next Week's Lotto.
MY GOAL IS TO CREATE EVERY SINGLE TICKET POSSIBLE
I…
BrianBeaven
- 173
- 1
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- 11
-6
votes
2 answers
Solve a simultaneous equation with product of the 2 variables in Python?
If i have 2 equations:
x = ab
and
n = a+b
where x and n are known, and a and b are large whole numbers, how can I solve them using Python?
Ananay Gupta
- 355
- 3
- 14
-6
votes
2 answers
how to split the certain range
I need to split range from main range. For example
var start = 0;
var end = 100;
var ranges = [
{ start: 25, end: 50 },
{ start: 60, end: 70 }
]
my expected output is,
{ start: 0, end: 24},
{ start: 51, end: 59},
{ start: 71, end: 100}
how to…
Akbar Basha
- 1,168
- 1
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- 38
-6
votes
1 answer
find a solution to Kepler's equation (iOS) (swift)
I am writing codes to find a solution (E) to Kepler's equation:
E - e*sin(E) = M
and all angles are expressed in radians,
M = 3.52821,
e = 0.016714
and theses are the steps:
First guess, put E = Eo = M
Find the value of O = E - e*sin(E) - M
If |O|…
JonahThePoo
- 3
- 3