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Timing and Position Triangulation Using Sensors

Say I have 3 vibration sensors around in a room. How would I determine the location of someone in the room using these vibration sensors. If I used an fpga I'm sure it could sample fast enough to ...
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1answer
57 views

comparison of two same type of lines in a code

i have two equations here m = (4*z - 1 + i)/2; w = (2*z + i); both equations use same type of variables but when value of p is greater than 14 m%n gives the correct value whereas w%n ...
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3answers
206 views

Having trouble understanding list comprehensions

I've just started learning haskell(literally, tonight!) and I'm having a little trouble understanding the logic of list comprehensions, more specifically the <- operator. A little example on Learn ...
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2answers
41 views

Working out the distance between 2 points in one plane only

How can I find the distance between the two points as shown in the above picture. I know I can use Pythagoras to find the 'actual' distance between the two points, but I want to find the X distance ...
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2answers
101 views

Pythagorean triplets whose sum is 1000?

Project Euler problem 9. I tried to solve it, infact I get triplets which are not Pythagorean triplets and their sum is 1000, Why? I made sure they were Pythagorean triplets. Here is my long and not ...
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2answers
738 views

Calculate distance in (x,y) between two GPS-Points

I'm looking for a smoothie way to calculate the distance between two GPS-Points, so I get the result like: "You have to go x-meters up and y-meters to the left - so I can work with a 2d-coordinate ...
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2answers
110 views

Accelerate framework ios: Fastest pythagoren calculation

So I have 2 matrices: each is 100x100. I am looking to calculate a 3rd matrix such that: M3[i]=sqrt(M1[i]^2 + M2[i]^2). I can obviously do ForLoops but I am sure there is something faster. I ...
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1answer
111 views

Finding all possible pythagorean triangles within a set of triangles

REVISION 1 I've looked at this thread: All possible Pythagorean Triples Looks similar to mine but I can't get mine to work for some reason.. Here's my code: #include <iostream> #include ...
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1answer
187 views

Why isn't this Python pythagorean theorem solver working? [closed]

print "Welcome to Dylan's Pythagorean Theorem Solver." from math import sqrt print "What are we solving for? A hypotenuse or a leg?" ask = raw_input("# ") if ask == "hypotenuse": print "What ...
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1answer
76 views

Parametrization of primitive Pythagorean triples

I have already wrote an algorithm to find integer Pythagorean triples, but unfortunately the algorithm runs at O(n^3). Does anyone know how to use parametrization to find Pythagorean triples? If so, ...
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1answer
177 views

algorithm for finding primitive pythagorean triples

here is my code: // PPT.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <stdio.h> #include <stdlib.h> #define LOWER_BOUND 1 #define ...
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139 views

Which one is better haversine or pythagorean?

I have mysql query to calculate distance between given longitudes and latitude within 50 meter radius. Here I want to know that by performance, speed and distance accuracy wise which one is better, ...
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0answers
115 views

Evenly distribute n points between two fixed points

I have two fixed points, (x1,y1) and (x2,y2). I am trying to distribute n points between them, so that the distance between every point is equal. This is easy when they are in a straight line, but I ...
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vote
1answer
301 views

Prolog: pythagorean triple

I have this code that uses an upper bound variable N that is supposed to terminate for X and Y of the pythagorean triple. However it only freezes when it reaches the upper bound. Wasn't sure how to ...
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5answers
114 views

function return: PHP

I'm not sure what I'm missing, but I can't get $c to output correctly. <?php function pythThm($a, $b){ $a2 = pow($a, 2); $b2 = pow($b, 2); $c = sqrt($a2 + $b2); ...

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