• ### How do I set the class path after JDK installation?

2 answers · Programming & Design · 2 months ago
• ### What is a parametric l-system?

I've searched the internet far and wide and all the definitions are the same, worded exactly the same. I'm struggling to understand it though. So if someone could reword it in simpler terms that would be great. I've written a bracketed L-System in C#, using rules such as F = F+F[->F] ,however am trying to make it parametric. I thought... show more
I've searched the internet far and wide and all the definitions are the same, worded exactly the same. I'm struggling to understand it though. So if someone could reword it in simpler terms that would be great. I've written a bracketed L-System in C#, using rules such as F = F+F[->F] ,however am trying to make it parametric. I thought just changing the variables on each system would work, it did, but that's not a parametric l-ststem, from what I've read and understand. Many thanks if you could describe it simply. I am a good programmer.
1 answer · Programming & Design · 2 months ago

Given: Up = 1/3 + 1/8 + 1/15 + 1/24 + 1/35 + ...+ a) find the p(th) partial sum of the series b) find the pth term c) find the limiting series
Given: Up = 1/3 + 1/8 + 1/15 + 1/24 + 1/35 + ...+ a) find the p(th) partial sum of the series b) find the pth term c) find the limiting series
2 answers · Mathematics · 2 months ago
• ### Needing help with creating algorithm for my class placement!?

I am teacher trying to work out the classes for my students next year. There are 56 kids needing to be broken up into two classes. I am trying to create a simple algorithm that will help with creating a program to facilitate this without having to actually sit down and work out class placements in my head which many have done for years before. I... show more
I am teacher trying to work out the classes for my students next year. There are 56 kids needing to be broken up into two classes. I am trying to create a simple algorithm that will help with creating a program to facilitate this without having to actually sit down and work out class placements in my head which many have done for years before. I have a basic understanding of computer programming and am wanting to develop some type of algorithm into a program. So I need two classes of 28. Each child did a sheet filling out what 5 people they wanted to be in a class with next year. We only promised them one person from the list each. The other conditions are certain children can not be placed with other children. (Oh the joys of teaching). Please, if anyone can enlighten or assist me in finding a way to do this, please help! Thank you kindly!
3 answers · Programming & Design · 3 months ago
• ### Integration help?? (cos x -sin x)/(√sin 2x)?

2 answers · Mathematics · 4 months ago
• ### Sequence limits?

What are two sequences Xn and Yn in [0,infinity) such that: |Xn - Yn| -> 0 But | (Xn)^1.5 - (Yn)^1.5| -/-> 0
What are two sequences Xn and Yn in [0,infinity) such that: |Xn - Yn| -> 0 But | (Xn)^1.5 - (Yn)^1.5| -/-> 0
Mathematics · 4 months ago
• ### Uniform continuity question?

Let 0 < θ < π/2 and f(x) never equals 0 on [0, θ] where f is continuous on [0, θ]. Show that there is a positive constant K such that |f(x)| ≥ K tan x on [0, θ]. And Show by example that, if we replace [0, θ] by [0,π/2) in (i), the result ceases to be true. I can show by using continuity that |f(x)| is uniformly continuous on [0, θ] but Ive... show more
Let 0 < θ < π/2 and f(x) never equals 0 on [0, θ] where f is continuous on [0, θ]. Show that there is a positive constant K such that |f(x)| ≥ K tan x on [0, θ]. And Show by example that, if we replace [0, θ] by [0,π/2) in (i), the result ceases to be true. I can show by using continuity that |f(x)| is uniformly continuous on [0, θ] but Ive no idea where to go from there.
Mathematics · 4 months ago
• ### HELP!! calculus assignment, impossible question!?

in the scatterplot above, the data points from the earlier years (1750-1800) are more erratic than the data points in later years (1900-1950). explain mathematically why this would happen, and what implications, if any, it would have for an argument for or against climate change.
in the scatterplot above, the data points from the earlier years (1750-1800) are more erratic than the data points in later years (1900-1950). explain mathematically why this would happen, and what implications, if any, it would have for an argument for or against climate change.
1 answer · Mathematics · 4 months ago
• ### Consider the ring A=Z3 x Z3. a. Find all subrings of A. Then find a subring B that is not an ideal. Explain why your example works.?

2 answers · Mathematics · 4 months ago
• ### Whats must be the functional form of f(x, y) so that z (x, y) = ax + by - f(x, y) is homegeneous of degree less than 1?

Mathematics · 4 months ago

Sum of n terms; 1/(1.2.3) + 1/(4.5.6) + 1/(7.8.9) + ...
Sum of n terms; 1/(1.2.3) + 1/(4.5.6) + 1/(7.8.9) + ...
2 answers · Mathematics · 4 months ago
• ### Prove or disprove that chop(L) is a regular language.?

PROBLEM STATEMENT: "Let L be any regular language over an alphabet Σ. Using L, we define chop(L) = {w : ∃ x, y, z ∈ Σ ∗ , xyz ∈ L, w = xz}. Show that chop(L) is regular or give a counter-example." MY ATTEMPT AT THE PROBLEM: I'm trying to make a non-deterministic finite automaton (NFA), since if one can be made, then I believe that... show more
PROBLEM STATEMENT: "Let L be any regular language over an alphabet Σ. Using L, we define chop(L) = {w : ∃ x, y, z ∈ Σ ∗ , xyz ∈ L, w = xz}. Show that chop(L) is regular or give a counter-example." MY ATTEMPT AT THE PROBLEM: I'm trying to make a non-deterministic finite automaton (NFA), since if one can be made, then I believe that that proves that the language is regular. Here ( https://www.docdroid.net/WgFtyCY/nfa.pdf ) is my attempt at making an NFA. Is that correct? If not, what's wrong with it? Any input would be greatly appreciated!
Programming & Design · 5 months ago
• ### A very very difficult demonstration A very difficult demonstration?

A triangle ABC is given. Divide BC in three equal parts so that BA' = A'A" = A"C (see figure) In the same way let CA is divided so that CB' = B'B" = B"A and AB is divided so that AC' = C'C" = C"B Now consider the following 6 points of intersection: M = AA' # BB" # means... show more
A triangle ABC is given. Divide BC in three equal parts so that BA' = A'A" = A"C (see figure) In the same way let CA is divided so that CB' = B'B" = B"A and AB is divided so that AC' = C'C" = C"B Now consider the following 6 points of intersection: M = AA' # BB" # means intersection N = AA' # CC" P = BB' # CC" Q = BB' # AA" R = CC' # AA" S = CC' # BB" DEMONSTRATE that the area of hexagon MNPQRS is 1/10 the area of ABC
2 answers · Mathematics · 6 months ago
• ### Prove that there exist integers a₁, a₂, a₃, ... a₂₀₁₃, b, all greater than 1, such that (a₁!)(a₂!)(a₃!)(a!)...(a₂₀₁₃!) = b!?

Prove that there exist integers a₁, a₂, a₃, ... a₂₀₁₃, b, all greater than 1, such that (a₁!)(a₂!)(a₃!)(a!)...(a₂₀₁₃!) = b! .
Prove that there exist integers a₁, a₂, a₃, ... a₂₀₁₃, b, all greater than 1, such that (a₁!)(a₂!)(a₃!)(a!)...(a₂₀₁₃!) = b! .
2 answers · Mathematics · 8 months ago
• ### I need help for Maths qn?

Does anybody know how to do this qn? I am facing difficulty approaching the maxima and minima qns... Thanks for the help!
Does anybody know how to do this qn? I am facing difficulty approaching the maxima and minima qns... Thanks for the help!
4 answers · Mathematics · 8 months ago
• ### Why remove the comments from open source? Why not make improvements, and re post it?

Up posted an app I wrote back in 2004. When I search for the keywords I used, I have found my code discussed many places on the internet. It has been re-posted dozens of places. In the 14 years that have passed, only two things have changed: 1. In some cases my comments have been removed. The comments included the license, the reason I wrote the... show more
Up posted an app I wrote back in 2004. When I search for the keywords I used, I have found my code discussed many places on the internet. It has been re-posted dozens of places. In the 14 years that have passed, only two things have changed: 1. In some cases my comments have been removed. The comments included the license, the reason I wrote the code, how to use it, lots of helpful tips, along with suggested things the person might want to change. 2. The code originally written to be compiled using a product that is no longer supported. The code pragma was updated to so it can be complied using currently supported compilers. It was nice of someone to make that change. Other than noted above, the code has not changed. Not one line has changed. I posted an email just for feedback purposes. Over 14 years dozens of people have sent me photos of their projects that made use of my code. That gives me warm fuzzies. Why remove the comments? Why not add features, or improvements and re-posting? Do people not understand what open source is about?
1 answer · Programming & Design · 9 months ago
• ### Looking for a course site that will allow a text-based course?

I am extremely experienced with web design, and I thought it would make sense to help others learn and maybe make a bit of money to help me with my car and college. Basically, I'm looking for a site that will allow me to publish an HTML (and eventually CSS, JS, etc) course. However, I can't use Lynda or Udemy because - correct me if I'm... show more
I am extremely experienced with web design, and I thought it would make sense to help others learn and maybe make a bit of money to help me with my car and college. Basically, I'm looking for a site that will allow me to publish an HTML (and eventually CSS, JS, etc) course. However, I can't use Lynda or Udemy because - correct me if I'm wrong - I don't believe they allow text-based courses. I'm pretty sure videos are required; and I can't do videos because I have no sort of quality recording software and equipment. If you guys could give me some reputable, well-known sites that will meet my needs I will greatly appreciate it. Thanks in advance!
Programming & Design · 9 months ago
• ### Reverse engineering Fake News using Computer Programming?

Can we program a computer to reverse engineer the underlying algorithms behind fake news ? Maybe, if we identify algorithms used in Fake News like - * Illogical assumptions - For instance, If I like Germany, I dislike Sierra Leone. This is a giveaway. It is as absurd as saying, if I like ice-cream, I dislike donuts. * Reinforcement of stereotypes... show more
Can we program a computer to reverse engineer the underlying algorithms behind fake news ? Maybe, if we identify algorithms used in Fake News like - * Illogical assumptions - For instance, If I like Germany, I dislike Sierra Leone. This is a giveaway. It is as absurd as saying, if I like ice-cream, I dislike donuts. * Reinforcement of stereotypes - For instance, if I sport an unkempt beard, I am of questionable character. This is absurd. The person could be a bum who can't afford a shaving kit. Or he could be the contestant on a reality TV show, who is moving around incognito !. :-) Do you agree ? And can you suggest some algorithms that could add to this list ?
3 answers · Programming & Design · 10 months ago
• ### What can you do with PowerShell that they couldn't have just made work in Command Prompt?

i realize you CAN'T do many things in CMD that you can in PowerShell, but couldn't they have just integrated that into CMD instead of creating a whole new language?
i realize you CAN'T do many things in CMD that you can in PowerShell, but couldn't they have just integrated that into CMD instead of creating a whole new language?
4 answers · Programming & Design · 10 months ago
• ### Find all pairs of positive integers (n, k) such that (n + 1)^(k) − 1 = n! (factorial) ?

2 answers · Mathematics · 1 year ago