Questions tagged [equations]
194 questions
0
votes
3 answers
f(n), understanding the equation
I've been tasked with writing MIPS instruction code for the following formula:
f(n) = 3 f(n-1) + 2 f(n-2)
f(0) = 1
f(1) = 1
I'm having issues understanding what the formula actually means.
From what I understand we are passing an int n to the…
melMPLS
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0
votes
1 answer
muParser and VC6
HI I am trying to use muParser with a legacy MFC application written in VC++6, migrating the code to a later version is not an option.
Has anyone had any success using muParser in this environment. any example source code would be great.
user655261
- 99
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- 12
0
votes
1 answer
Finding Solutions to a Set of Equations
Suppose I have some known relations between some variables, for example a = b + c and a starting solution, e.g. a=2, b=1, c=1. I'm writing some code such that, given an update, e.g. a=3, I update the values of b and c so that the relation is still…
marius
- 1,352
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- 29
-1
votes
1 answer
Does any equation holds for inverse(A- B)?
is it possible to calculate inverse of A-B, i have calculated inverse of A and B already.
Maddy.Shik
- 6,609
- 18
- 69
- 98
-1
votes
1 answer
Write a C program that computes the solutions for x and y in the linear system of equations
what's wrong with my code that i can't get the values for x and y, assume that the denominator is not zero.
i can't get constant values of x and y, most of the time its equal to zero.
a1x + b1y = c1
a2x + b2y = c2
#include
#include…
wty
- 19
-1
votes
1 answer
Function Keeps Subtracting Instead Of Dividing
Below is the code that I have
let interestone = 0.0485
let interesttwo = 0.0625
let interestthree = 0.0725
let months: Double = Double(leasingTextField.text!)!
if months <= 24 {
rentePercentLabel.text = String(format: "%.2f%%", 4.85)
…
Julian
- 15
- 5
-1
votes
3 answers
how to get value of three numbers knowing three information
I am trying to solve a problem that I need to get value of three unknowns(x,y,z) knowing some info. their summation is equal to 70, x^2 + y^2 = z^2 and x < y < z.
Answer should be x = 20, y = 21, z = 29
I tried to solve it as two equations in three…
Roony Saeed
- 3
- 3
-1
votes
1 answer
How to solve simultaneous equations through processing
I'm only new to processing and it's confusing me far more than Java or Javascript ever did!
I have to solve simultaneous equations for a college assignment. (It's a class where they don't really explain to us what they're doing in the code.)
I know…
Jessie
- 47
- 7
-1
votes
2 answers
Fitting y = a + exp(bt) to two points
I would like to fit y = a + exp(bt) to the points (1,1) and (2,5). So I take the natural logarithm of the equation and apply it to both points:
ln(y1) = ln(a) + bt1
ln(y2) = ln(a) + bt2
With (1,1) = (t1, y1) and (2,5) = (t2, y2) so that:
ln(1) =…
R. Estevan
- 1
- 1
-1
votes
1 answer
Android unit converter... too many equations
I am creating a unit converter for Android that uses buttons (to select the type of unit) and spinners (to select the unit) but I have ran into a problem. There are too many possible equations. If you have ten units in each spinner for all the unit…
Eklassen
- 13
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- 6
-1
votes
1 answer
Unit tests for math equations
I need to generate unit tests for a mathematical equation such as a= (b+c)* d and boolean expressions.Is there any methodology and/or utility to achieve this?
user3048305
- 23
- 4
-1
votes
2 answers
How to add a hat to a greek letter in a graph label in excel 2013
I need to add the following character in the Y-axis label of an Excel 2013 plot: the greek letter xi, with a hat ^ on top, and all that with a subscript of 1. If you are familiar with latex, I need : $\hat{\xi}_1$
I know this can be done easily in…
Crix
- 3
- 2
-1
votes
2 answers
how to convert null coefficients for the variables in equations "x^2+x^2+2x-x-25" to be "+1x^2+1x^2+2x-1x-25"?
This is my attempting to fix the coefficient of any math equation variable
for sum coefficients of the same variables like "x^2+x^2+2x-x-25" to be "+1x^2+1x^2+2x-1x-25" and then make the summation to be "2x^2+x-25", Notice that i have done the…
Hossam Hassan
- 665
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- 22
-1
votes
2 answers
Chemical formula in css
I need to write several formulas in CSS (or is there some other way?) and integrate it on my quiz website for students.
I already found some interesting examples in here:
http://www.periodni.com/mathematical_and_chemical_equations_on_web.html
But I…
Andrea
- 19
- 3
-1
votes
1 answer
Iterate to find value of (X) in matlab
I have the following equation
(250-25)/((0.0106+1.89799*10^-3)+(log(x/15)/2*3.14*45)+(1/10*2*3.14*x))...
==157.19;
i'm trying to find the value of x to make the right hand side equal to the left hand side.
so far i've tried the following…
Mohamed Maher
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