TransWikia.com
  1. All Categories
  2. Mathematics

Mathematics : Recent Questions and Answers (Page 80)

Find answers to your questions about Mathematics or help others by answering their Mathematics questions.

Function where changing the order of integration is not allowed

Recently on this forum there was a question by a student whether changing the order of integration in the $2D$ or $3D$ case is --in principle-- allowed, and...

Asked on 11/18/2021 by M. Wind

2 answer

Definite integral using properties

Find the value of the following integral.$$int_{0}^{4pi} ln|13sin x+3sqrt3cos x|;rm dx$$ My attempt: Using the properties of definite integral, I converted it to this integral.$$4int_{0}^{pi} ln|14sin(x+arctan(frac{3sqrt3}{13}))|;rm...

Asked on 11/18/2021

1 answer

Alternative definition of an active constraint

In constrained optimization, an active constraint is generally taken to mean one whose inequality sign can be changed into an equality sign without affecting the optimum. However, I would like...

Asked on 11/18/2021 by Tim Mak

1 answer

Redundant sigma points in Unscented Kalman Filter?

According to the Unscented Transform equations in an Unscented Kalman Filter, sigma points are chosen via: $chi^{[0]}=mu$ $chi^{[i]}=mu+left(sqrt{(n+lambda)Sigma}right)_i;;;i=1,...,n$ $chi^{[i]}=mu-left(sqrt{(n+lambda)Sigma}right)_{i-n};;;i=n+1,...,2n$ where $mu$ is a...

Asked on 11/18/2021 by pcdangio

0 answer

Is "An undirected graph $G(V,E)$ has at least $|V|-|E|$ connected components" a true statement?

I'm taking this Coursera's course on Graph Theory, which is part of a specialization in discrete math for CS, offered by University of California, San Diego: https://www.coursera.org/specializations/discrete-mathematics...

Asked on 11/18/2021 by Daniel Bonilla Jaramillo Haase

1 answer

If $I$ is generated by a regular sequence, $bigoplus_{n geq 0}I^{n}/I^{n+1}$ is isomorphic to a polynomial ring

Let $R$ be a Cohen-Macaulay ring and $I$ be an ideal generated by a regular sequence. I want to show that:$bigoplus_{n geq 0}I^{n}/I^{n+1}$ is isomorphic to a...

Asked on 11/18/2021 by user766483

0 answer

Is there a third "version" of difference-of-means hypothesis testing?

I'm following Schaum's Outlines for statistics as well as taking a course and I'm getting mixed up with the way hypothesis testing is done for differences of means. First the...

Asked on 11/18/2021

1 answer

A double check of my answer. Involves geometry and algebra

The $2$ slices cut into by Lee combine to make one big triangle. I used the Pythagorean theorem to find the...

Asked on 11/18/2021

2 answer

Evaluating $lim_{nrightarrowinfty}int_0^nfrac{(1-frac{x}{n})^n}{ne^{-x}}dx$

Question: Find $lim_{nrightarrowinfty}int_0^nfrac{(1-frac{x}{n})^n}{ne^{-x}}dx$. My thoughts: First, I'd like to bring the limit inside the integral, because $lim_{nrightarrowinfty}frac{(1-frac{x}{n})^n}{ne^{-x}}=frac{e^{-x}}{ne^{-x}}rightarrow0$ and $nrightarrowinfty$, and so the value of the integral would...

Asked on 11/18/2021

1 answer

Is it mathematically possible to solve this problem?

$$vec{y}= log{frac{vec{x}}{sqrt[3]{x_1 cdot x_2 cdot x_3}}}$$ Here, $x$ and $y$ are always vectors of length 8 and all elements of $x$ are greater than $0$....

Asked on 11/16/2021

2 answer

Ask a Question

Get help from others!

© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP