[math] Forum Topics

I am a college student in China.My major is math，I want to go to learn programming，but it seems that I can't find a good way，I don't know the correct learning way.I think that I have been lost in useless learning.It's too terrible,my god!

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, …

how can we use math .pi without using impot java.lang.Math*; PROGRAMING LANG:- JAVA

I'm not good with math functions at all, but I've searched for a while and couldn't find anyone even touching on this subject. I'd like to have the price of $900 slowly approach $1500 between the dates of April 1st and August 1st. That's about $5 per day, and the …

if i have X,Y(10,20) and the speed is 2, will be: X = X + 2 Y = Y + 2 ? same goes for Z or it depends on direction?(Y or X rotation)

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

Hello everyone, I am posting this more generically in the software development section to see what might be available and to increase a possible success rate. But enough of that let's get to the question at hand. Recently, in C#, I started back up a project of mine to do …

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 …

I want to show the total qty of these query (total qty from datagridview where ActualQty value will update the values of Used Column) `SELECT COUNT(Software) AS ActualQty FROM tblswlogs WHERE Software='MS EXCEL'` and (**Total** will appear in textbox) `SELECT MAX(used + initialqty) As Total FROM tblswlist WHERE Software = …

Cell C4 has the expression =565+660+709+1093 Is there a function/nest of functions that can output the number of values being added? BIG NOTE: I AM NOT ASKING FOR THE SUM OF THE EXPRESSION!

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, I want to Count the number of occurences of data in a table, then multiply it in a value from other table, After that I want to sum up the product of count and the value from other table, As of now, I cant count and then multiple but …

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 I have to write program that finds a solution how to put 12 knights to a 8x8 chess board that every square would be dominated by one of the 12 knights. Do you have any suggestions from where I can start?

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 …

#include<stdio.h> #include<math.h> int main() { int n,nstart,nstop,nstep,i,j,zNumber; ` printf("Please enter a value of a positive integer nstart: "); scanf("%d",&nstart); printf("Please enter a value of a positive integer nstop: "); scanf("%d",&nstop); printf("Please enter a value of a positive integer nstep: "); scanf("%d",&nstep); printf("Number\t\tzNumber\n"); printf("------\t\t-------\n"); n=nstart; zNumber= double pow(double_n,double_i); while(i<=nstop){ zNumber = …

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 …

Hi, I am using jQuery function to calculate total of item price (label) multiply by quantity (textbox), this is working fine so far. Also, I added additional label for shipping which getting the data from rbl object, also working fine. The calculation I'm trying to get is sum of total+shipping, …

I have a query that starts like this... SELECT COUNT(A.FISH), COUNT(B.MEAT), COUNT(C.FRUIT).... now my problem is this, how could I count when I need to consider an expiration date for each column,...and the expiration dates varies for each column... Can I do this in one query? Or is there any …

So I have the following MySQL query, which works fine: select year(created_at) as year, month(created_at) as month, day(created_at) as day, item_sdb_id, price_per_unit from (select l.item_sdb_id, l.list_price / l.quantity as price_per_unit, l.created_at from listings as l inner join purchases as p on l.purchase_id = p.id where l.item_sdb_id in (12345) and p.created_at …

I need help with this: -write an application to perform simple arithmetic operations on integers. Specification 1.Name the .java file SimpleMath 2.The program should do the following: ◦Prompt the user to enter five integer values from the keyboard. ◦Display the sum and average of the numbers. ◦Display the quotient of …

C++ program to find sum of marks entered by 30 students using for loop or while loop/