[math] Forum Topics

I am interested in technology, however I do not wish to go to university and after stumbling upon the MIT Challenge, I have taken it as a proof of concept. Clearly education is changing, and I would like to take a less traditional route. But before I go too far, …

I'm using this snippet to calculate the sum of two table cells. var sum = 0; $('.amount').each(function(){ sum += parseFloat($(this).text()); }); $('.sum').text(sum); But when the sum is for example 40.00 it displays as 40 and as picky as I am, i want it to display as 40.00. So... what to …

Hi Friends. i am working on my internal work. i am having n dynamic rows, Each and every row contain total. i want to sum all the rows total. i have attached the screen shot for the reference

Sorry for the vague title, but I'm using a PHP snippet on a WooCommerce shop which shows the difference between an old price and a new price (sale price) in a percentage bubble on the page. The thing is it shows also percentages with decimals behind a comma if it's …

For my own use, I'd like to develop a small Vector and a Matrix class, independent of some big libraries that exist out there. My question is: Should Vector and Matrix stay two independent entities or should I derive a Vctor frm a Matrix or a Matrix from a Vector? …

Hi everyone i need some help down here. i am trying to connect multiple db and at the same time i want to sum the value of the column. what i have right now is this SELECT SUM(total) as branch1sales FROM icm.sales UNION SELECT sum(total) as branch2sales FROM hism.sales its …

I'm sure this is simple, but I'm having a time trying to figure out how to add two fields from two different tables together. <?php include_once('conn/db.php'); $query = "SELECT SUM(`sold`) AS total FROM veggies"; $stmt = $con->prepare( $query ); $stmt->execute(); while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){ extract($row); echo "<small><u>Plants Sold</u>: {$total}</small>"; } …

Good day guys, I would just like to share my code and wanted to do something about it. This code shows a loop inside a loop initializing a two-dimensional array named arr with elements [2] and [5]. Here's my code: #include <iostream> #include <conio.h> using namespace std; int main () …

Hello. I need to write a program to evaluate a definite integral with Simpson's composite rule. 1.  I know there is a Simpson's rule available in Scipy, but I really need to write it by the following scheme. 2.  , where a, b - limits of …

Hey there, I'm having trouble getting my program to read every instruction to then execute it, as well as displaying everything correctly. Right now my program displays mainly garbage and for now I simply want it to be able to successfully run a simple addition program, so any advice or …

Hi, in my polynomial class all the terms consist of a List of tuples (double, uint), representing the coefficient and the exponent; a real and a natural number. The +operator implementation works great, but I was wondering if I could avoid to write two times `grouping.Sum(s => s.Item1)` It somehow …

Hi there, I'm a real newbie to python so sorry if this is a stupid question or if I don't fully get your answer, no hate please! I'm trying to write a small program to use when calculating differential equations bu using Euler's step method, don't worry if you don't …

So I have a button which adds a "Miner" then removes the cost of the Miner. The problem is that it is taking away too much, double the cost, and also will not buy if the current gold is equal to the cost. I have no idea why it is …

please help for query... i want sum (kns+kng) by name - [example](http://sqlfiddle.com/#!2/b5a7e6) the result should be: name|sum ----------- john - 36 bart - 16 steve - 53 jim - 10 tnx

Hi Guys , I couldnt dispay sum of a column of sqlite database in php . I tried the sql statement in database its working fine but not sure how to dispay the result in PHP . I belive i need to fetch it and then dispay any help will …

I'm creating a table with PHP/MySql to enter local election results from my newspaper, I'm not a professional developer, more of just a hobbiest hack (who hasn't worked with PHP for a few years either), so feel free to correct existing code if you so please. What I want to …

i have this new problem i hope that im not a spam here in this site.but i have to do this bcoz i have no where else to go.sorry for my english hope u understand me.in the picture that i uploaded i have textbox1 and textbox2 their value comes from …

I choose a program that can read data from a txt file. Now, I input two column from txt file and i want to substract first value of 2nd column to every value of 2nd column. finally I want the sum of substracted values. Can anyone please help me. Actually, …

I'm trying to sum all numeric fields individually. I won't always know the field names, otherwise I could manually construct the query `SELECT SUM(Field1) as Field1, SUM(Field2) as Field2...etc FROM myTable` Is there a way to construct this on the fly in mysql? I'm thinking there's probably a way to …

I have a void function that takes data from an ifstream, reads the first value, (which is an ID #), and compares that value against the ID# info from an array of records. If it's invalid, the rest of the line is ignored. If it's valid, it adds the hours …

Hi i'm having a trouble with this i got 3 textbox and i format it to Textbox1.Text = Format(Textbox1.Text, "Standard") Textbox2.Text = Format(Textbox2.Text, "Standard") Textbox3.Text = Format(Textbox3.Text, "Standard") which give something like this 1,230.00 2,500.00 1,245.00 and when i add it `Textbox4.text = Val(Textbox1.Text) + Val(Textbox2.Text) + Val(Textbox3.Text)` the result …

Hello all! I am sorry to have to waste your time with such an easy problem but I am stuck with some coders block on this one. I know it is definitely an easy fix I just cannot seem to wrap my head around it at the moment... I do …

Hi Guys, I was trying to code in C for the following. You are given with 2 files, file1.txt and file2.txt. The contents of the file contain INTERGER values. Add the contents of the file and write them to another file file3.txt. My code is as follows #include <stdio.h> #include …

I have a site for youth basketball, where parents can list their kid to get them onto a team. The listings that get replied to by teams needing players are deleted, but some listing remain on there for months or years. To combat the potential confusion of which grade a …

Hello its me again... sorry to keep on posting about my problem well here it goes.. If you see in the attached file.  I have an AM Ervielette, Marriane etc. now i need to add their Total Calls for Ervie and Total Visits same goes to the other.. …

Hi guys need help again hope you can help me.. I have a database and i want to Compute all the Total Calls of my 2nd Column I wonder how can i do that? can you give me an example? I'm using Oledb Connection? Thanks in advance.

I won't be asking for a source code yet. What I need to figure out is the process of a certain Math problem with the equation that seemed to be impossible to be converted to source code. Here it goes: **A certain waveform is 0 volts for time less than …

I have two tables (points, pointsmatch) Table 'points' have following fields id (int) seriesid (int) team (varchar) points (int) id seriesid team points 1 9 Chennai 4 2 9 Delhi 0 3 9 Kolkata 0 4 9 Mumbai 0 5 9 Bangalore 0 6 9 Mohali 0 7 9 Rajasthan …

For any integer n > 1, if Al, A2, A3, ... , An, and B are any sets, then (A1 -B) (A2 -B) ... (An -B) = (Al A2 A3 … An) -B. I was able to prove for all sets A, B, and C, (A -B)(C -B)= (AC) - …

**the code works perfectly, just i got something i dont understand...** i'v been trying to get a hold of recursion and sorting for about 3-4 days now, im getting some of it, but still not happy enough.. i searched for some good code for binary search and merge sort on …