Category "math"

The best algorithms to detect continuing decrease pattern on conversion data

I'm tring to use an algorithm for finding and ranking continuing decreases in my data. The base condition: The breakpoint location (blue arrow) is unknown but b

Rotate a Multiple Lines in OpenCV/Python

I have many lines in my opencv, I want to rotate them but Opencv does not have shape rotation functionality. It has image rotation function. I made a rectangle

Rotating an end point while having the direction

I have a point and a direction and I would like to know what that point would be if it was rotated by 45 degrees. For example, if I have Point A being (0, 0, 0)

Find the nth character of an increasing sequence

Recently i saw a competitive coding question, the bruteforce approach doesn't meet the time complexity, Is there any other solution for this, Question: An expan

Trying to use math function: sgn... error : sgn is not declared

hmm... I imported:System.math... test as integer=sgn(100) I get the error: sgn is not declared. Other math functions work. So Why? Might Visual Studio not be

Is floating point math broken?

Consider the following code: 0.1 + 0.2 == 0.3 -> false 0.1 + 0.2 -> 0.30000000000000004 Why do these inaccuracies happen?

How to create TradingView indicators that look like this?

I've been trying to create similar indicator to this This is the reference I have the code for RSI, Stochastic RSI, MACD and 50/100/200 MA (with crosses), but I

How to create TradingView indicators that look like this?

I've been trying to create similar indicator to this This is the reference I have the code for RSI, Stochastic RSI, MACD and 50/100/200 MA (with crosses), but I

E-olymp: Profit. 90% gives, one test wrong answer

Description of my code: For example, take n = 3, and let p [i] be 1 2 3. For beginnings, max = 0. I take in this order the sequences: 1, 1 + 2, 1 + 2 + 3, 2, 2

How to solve a math sequence in R?

EDIT: I could not come up with a more precise question title but please let me know what better title I could use, thanks! I have a "basic" math problem that I

Error plotting symbolic variable in MATLAB?

I am trying to learn fourier transform from book"signals and systems laboratory with matlab alex palamides" On page 312, following code is given which demonstra

Display Math calculation on a HTML Element with Javascript

I got the following code that calculates a percentage and I want to show the correct result on a html element (p). This is what I have but it's not displaying a

find the smallest integer N, such that

I am stuck for quite a while now on the following task: find the smallest integer N, such that A^N < N! I want to do this in C# and A can be so big that ther

mXparser's iff() conditional does not support equality test

I'm using the Java/.NET symbolic math library mXparser (5.0.2) to support user-provided math expressions in my app. Problem I found that the conditional clause

Does modulo (%) operation applied to part of the sum and applied to whole sum equal?

Is the LHS = RHS ? ((((i + k) % nums.length) + k) % nums.length) == ((i + k + k) % nums.length) What is this property called? Does it hold true for multiplica

Adaline AI results in an overflow

I made an AI that uses the Adaline algorythm. It seemed to work but it results in an overflow if it's used with my own dataset. Here's the code: import sys imp

How to bitwise rotate left and rotate right on arbitrary sized number ranges?

How to rotate right and left over an arbitrary number of bits. So say I am looking at 5 bits. How do I rotate around 5 bits, though I am in JavaScript. Or 8 bit

Calculate Decay Rate in Python

I have dataset which somewhat follows an exponentional decay df_A Period Count 0 1600 1 894 2 959 3 773 4 509 5 206 I want

Delta operator in sympy

Is it possible to make a delta operator like this in sympy? Im not really sure how to code it. Should be really eazy if there exists a method.

name 'DiracDelta' is not defined in calculating the hessian

I'm working on a project and trying to calculate the gradient and the hessian using this symbolic library but I'm getting an error NameError: name 'DiracDelta'