text stringlengths 0 1.01M |
|---|
## anonymous one year ago The graph of y = f ′(x), the derivative of f(x), is shown below. Given f(2) = 8, evaluate f(–2).
1. anonymous
2. anonymous
let me try to do it on my own,tell me if i'm doing something wrong
3. anonymous
Sure
4. anonymous
Remember, use the information that f(2)=8, to find f(-2)
5. anonym... |
How to roughly extrapolate artillery range for planets with different atmospheric pressure?
I'm looking for some rough way of extrapolating artillery range for planets with different atmospheric pressure:
Realistically, the data available:
1. Hypothetical range in vacuum: $$\dfrac{V^2}{g}$$ (V - muzzle velocity, g -... |
### - Art Gallery -
IIn abstract algebra, a magma (or groupoid; not to be confused with groupoids in category theory) is a basic kind of algebraic structure. Specifically, a magma consists of a set equipped with a single binary operation that must be closed by definition. No other properties are imposed.
History and ... |
Could real iterates of the Taylor Series expansion of $b^x$ help to find a way to define tetration?
When we consider the Taylor Series expansion of $f(x)=b^x$ for some $b \in \mathbb{R}$, we see that $$b^x = 1 + \sum_{n=1}^{\infty}\frac{(\log(b))^n}{n!}x^n.$$ We can substitute $x$ for $b^x$ to find that $$b^{b^{x}} = ... |
# Which set?
Algebra Level 3
The set of values of x satisfying simultaneously the inequalities $$\dfrac { \sqrt { (x-8)(x-2) } }{ \log _{ .3 }{ (\frac { 10 }{ 7 } } (\log _{ 2 }{ 5 } -1)) } \ge 0$$ and $$2^{x-3} - 3!>0$$ is :
|
## connor50 one year ago How many photons are produced in a laser pulse of 0.819 J at 531 nm?
1. aaronq
find the energy given by one photon of that wavelength E=hc/lambda divide the energy given 0.819 J by the energy of one photon
2. connor50
$3.74 \times 10^-37$?
3. aaronq
what energy did you get per photon
4. ... |
# Isometric projection
Isometric projection
Isometric projection is a form of graphical projection—more specifically, an axonometric projection. It is a method of visually representing three-dimensional objects in two dimensions, in which the three coordinate axes appear equally foreshortened and the angles between a... |
# How to relate speed of sound with relative humidity?
I am exploring the idea of measuring the humidity of a space using sound waves, however I am having trouble finding a mathematical relationship between the speed of sound and the humidity level.
$c_{air} = 331.3 \sqrt{1 + \frac{T}{273.15}}$ but this is for dry ai... |
World's most popular travel blog for travel bloggers.
# [Solved]: Red black tree partition to $\sqrt{n}$ trees
, ,
Problem Detail:
This is a question I have stumbled upon in an old Algorithms test I found online:
A) Plan an algorithm that does the following: Input: Red-Black tree Output: $\sqrt{n}$ seperate trees, ... |
## Introduction
Maritime transport is considered the backbone of international trade and the global economy1,2,3. With ports supporting the integration of production centres and consumer markets across borders4, there are large dependencies and feedbacks between changes in the size and structure of the economy (e.g. t... |
The formula for percentage yield is given by, Percentage yield= (Actual yield/theoretical yield )x100, Rearrange the above formula to obtain theoretical yield formula, Determine the theoretical yield of the formation of geranyl formate from 375 g of geraniol. Assume it can react with other reagents to create a molecule... |
## Intermediate Algebra for College Students (7th Edition)
$1.06\times10^{-18}$gram
Multiply mass of one oxygen molecule with 20,000. Note that $20,000 = 2\times10^{4}$ in scientific notation. $=(5.3\times10^{-23})\times(2\times10^{4})$ $=(5.3\times2)(10^{-23}\times10^{4})$ $=10.6\times10^{-23+4}$ $=10.6\times10^{-19}... |
# Whole number solutions
#### ssome help
Prove that $n >=(greater than or equal to) 32 can be paid in$5 and $9 dollar bills ie the equation 5x+9y=n has solutions x and y element (Z(sub0)^+) for n element of Z^+ and n >=32. See a similar problem here. On this forum, the dollar sign starts a "mathematical mode" where ... |
library(tidyverse)
## ── Attaching packages ──────────────────────────────────────────────────────────────────────────────────── tidyverse 1.2.1 ──
## ✔ ggplot2 3.2.1 ✔ purrr 0.3.3
## ✔ tibble 2.1.3 ✔ dplyr 0.8.3
## ✔ tidyr 1.0.0 ✔ stringr 1.4.0
## ✔ readr 1.3.1 ✔ forcats 0.4.0
## ── Conflicts ... |
## Construction
1. WvA astrologers use house cusps defined by the intersections of ten planes of oblique ascension with the ecliptic plane. First the Ascendant Parallel Circle (APC) is constructed, a plane through the ascendant point, perpendicular to the celestial equator. In the diagram the APC is represented as th... |
+0
# geometry
0
198
1
+52
A large sphere has a volume of $288\pi$ cubic units. A smaller sphere has a volume which is $12.5\%$ of the volume of the larger sphere. What is the ratio of the radius of the smaller sphere to the radius of the larger sphere? Express your answer as a common fraction.
Jul 2, 2018
A large ... |
Question
# What is the probability that in a group of ‘N’ people , at least two of them have the same birthday.
Hint: At first , excluding leap years there are 365 different birthdays possible , so in a group of N people the person can have birthdays in ${\left( {365} \right)^N}$different ways. This can be denoted by... |
# Find the Derivative
I'm currently studying the product rule and have come across a section of questions that seems to make no sense. I'm sure there's just one little thing that I'm missing but I am unable to spot it. Anyhow, I was hoping someone could show me step-by-step how to solve the following, and hopefully I ... |
What is the molar mass of carbon tetrachloride?
May 4, 2016
The same as the mass of 1 mole of carbon and 2 moles of chlorine gas.
Explanation:
${\text{C"(s) + "2Cl"_2(g) rarr "CCl}}_{4} \left(l\right)$
A mole of carbon has a mass of $12.011 \cdot g$.
A mole of chlorine gas has a mass of $71.0 \cdot g$.
You do th... |
# Multiplication Worksheets - Page 3
Multiplication Worksheets
• Page 3
21.
The height of the triangle is 10 times the base $b$ in a right triangle. Find the area of the triangle.
a. 5$b$ square units b. 15$b$2 square units c. 10$b$2 square units d. 5$b$2 square units
#### Solution:
Height of the triangle is 10b un... |
# Science Fair Project Encyclopedia
For information on any area of science that interests you,
enter a keyword (eg. scientific method, molecule, cloud, carbohydrate etc.).
Or else, you can start by choosing any of the categories below.
# Probability axioms
The probability $\mathbb{P}$ of some event E (denoted $\math... |
# LOG#147. Path integral (II).
Are you gaussian? Are you normal?
My second post about the path integral will cover functional calculus, and some basic definitions, properties and formulae.
What is a functional? It is a gadget that produces a number! Numbers are cool! Functions are cool! Functionals mix both worlds.
... |
8-97.
Draw a diagram.
Find the total area of the outside rectangle by adding
the area of the inside rectangle to the area of the walkway.
30 + 10 = 40 sq m
If x meters of walkway was added to each side, write an
expression for each side of the outside rectangle.
length = 5 + 2x
width = 2 + 2x
Now write an equati... |
## DMOPC '18 Contest 6 P2 - Enantiomers
View as PDF
Points: 7
Time limit: 1.0s
Memory limit: 64M
Author:
Problem type
Carbon, the element of life, is part of many different molecules essential to living things. One particular type of carbon-based molecule, the tetrahedral molecule, consists of a single carbon atom b... |
# reducibility, axiom of
Axiom introduced by English philosopher and mathematician Bertrand Russell (1872-1970) in connection with the ramified theory of types. It says that any higher-order property or proposition can be reduced to an equivalent first-order one.
The ramified theory caused difficulties for defining r... |
# Equation - inverse
Solve for x:
7: x = 14: 1000
Result
x = 500
#### Solution:
$7: x=14: 1000 \ \\ x \ne 0 \ \\ \ \\ \ \\ x/7=1000/14 \ \\ \ \\ 2x=1000 \ \\ \ \\ x=500 \ \\ =500$
Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any... |
# Center of mass of a sphere with cavity removed
Tags:
1. Oct 16, 2016
### 1v1Dota2RightMeow
1. The problem statement, all variables and given/known data
A solid sphere of density $ρ$ and radius $R$ is centered at the origin. It has a spherical cavity in it that is of radius $R/4$ and which is centered at $(R/2, 0, 0... |
...
## Section 3A
### Percentages:basic skills and concepts; solving percentage problems
##### Percentages:basic skills and concepts
Exercise 30 p.132
Express the percentage $$121 \%$$ as a reduced fraction
Solution
Divide it by $$100$$ to get
$$121\% = \frac{121}{100}$$
Answer: $$121\%$$ is equivalent to $$\f... |
# Geometry: Urgent Help: Area of Trapezoid Circum. Abt Circle
• April 8th 2006, 07:45 PM
Yumi
Geometry: Urgent Help: Area of Trapezoid Circum. Abt Circle
This is the figure:
http://img404.imageshack.us/img404/1...helpppp6yk.gif
Thanks a lot!!
• April 8th 2006, 11:57 PM
earboth
Quote:
Originally Posted by Yumi
Hiii, th... |
# Advent of Code 2020 - Day 5
This problem seems a lot of work at first but in reality it’s just binary number conversion to decimal.
Picking up the provided example:
FBFBBFF RLR
If we replace the lower half [F, L] by 0, and the upper half [B, R] by 1 we get:
0101100 101
Doing the conversions:
\begin{aligned} ... |
# 1972 USAMO Problems/Problem 4
## Problem
Let $R$ denote a non-negative rational number. Determine a fixed set of integers $a,b,c,d,e,f$, such that for every choice of $R$,
$\left|\frac{aR^2+bR+c}{dR^2+eR+f}-\sqrt[3]{2}\right|<|R-\sqrt[3]{2}|$
## Solution
Note that when $R$ approaches $\sqrt[3]{2}$, $\frac{aR^2+b... |
$$\require{cancel}$$
# 2.18: Determination of the Principal Axes
We now need to address ourselves to the determination of the principal axes. Unlike the two- dimensional case, we do not have a nice, simple explicit expression similar to Equation 2.12.12 to calculate the orientations of the principal axes. The determi... |
Wine glass acoustics - wavelength not what expected
Hi,
I have been conducting a lab experiment using a piece of latex glove to stimulate a tone from a wine glass that is rotating on a turntable. I used the equation $$\lambda$$=v/f (using an audio spectrometer setup to find f) to find the wavelength of the emitted ton... |
# ngram v3.0.4
0
0th
Percentile
## Fast n-Gram 'Tokenization'
An n-gram is a sequence of n "words" taken, in order, from a body of text. This is a collection of utilities for creating, displaying, summarizing, and "babbling" n-grams. The 'tokenization' and "babbling" are handled by very efficient C code, which can... |
# Is NH_3 a gas or a solid? How do you know?
Jun 15, 2018
Well, it's a gas... how do I know? I've smelled it passing by, after seeing a student react a mixture of cations (containing ${\text{NH}}_{4}^{+}$, ${\text{Mn}}^{2 +}$, ${\text{Fe}}^{3 +}$, ${\text{Ag}}^{+}$, ${\text{Ni}}^{2 +}$, and ${\text{Al}}^{3 +}$) with ... |
### ¿Todavía tienes preguntas de matemáticas?
Pregunte a nuestros tutores expertos
Algebra
Pregunta
2. This fraction has a numerator that is $$3$$ less than its denominator. The sum of its numerator and denominator is $$19 .$$ The fraction is ... * *
$$\frac{8}{11}$$ |
# Find all $n\in\mathbb{N}$ for which $\frac{x^n + y^n + z^n}2$ is a perfect square, whenever $x,y,z\in\mathbb{Z}$ such that $x+y+z=0$
Find all positive integers $n$ for which $\dfrac{x^n + y^n + z^n}2$ is a perfect square, whenever $x$, $y$, and $z$ are integers such that $x + y + z = 0$.
I don't even know where to ... |
# Where can I find the old papers of the Math Tripos?
Is there a repository on the Internet which has the old question papers of the tripos? I am specifically interested in the papers during the 1890-1910 era, which was the era before the reforms, although I'm also interested in the other, more recent papers.
Most of... |
Home >> AIMS
# If A,B, and C are angles of a triangle , then $e^{iA}.e^{iB}.e^{iC}=$
$\begin{array}{1 1}(A)\;i \\(B)\;1 \\(C)\;-i \\ (D)\;-1 \end{array}$
If A,B, and C are angles of a triangle , then $e^{iA}.e^{iB}.e^{iC}=-i$ |
# GCC Assembly questions
## Recommended Posts
I've been planning to use GCC inline assembly in my cross-platform engine for speed and brevity, but after reading about many of the fundamental differences (endianness, etc) in processors, I'm not so sure about it anymore. How much alteration would some basic inline asm... |
# Homework Help: Electric Potential Energy concepts
1. Sep 23, 2014
### wannabee_engi
1. The problem statement, all variables and given/known data
1. What does the following equation mean and how is it analogous to the relationship between the electric field and the the electrostatic force?
V ( ~r ) = U ( ~r ) / q
... |
North Carolina Math 3 EOC Post Test
### North Carolina Math 3 EOC Post Test Sample
Standard: F-BF.4a DOK: 1 1 pt
9.
What is the domain of the inverse of the function, ?
Standard: G-CO.14 DOK: 3 1 pt
15.
Circle B includes $\stackrel{⏜}{XY}$ that measures 4 feet. What is the length of Circle B’s diameter, rounded to... |
Paul Alexander Dienes
Quick Info
Born
24 November 1882
Tokaj, Hungary
Died
23 March 1952
Tunbridge Wells, Kent, England
Summary
Paul Dienes was a Hungarian mathematician who, because of his political views, had to escape from Hungary in 1920. He spent most of his career in Wales and England, was a highly effective P... |
# Math Help - Linearization
1. ## Linearization
Find the linearization of the function at the point (0, -1).
__________
Use the linear approximation to estimate the value of = _____________
Thanks!
2. Originally Posted by jffyx
Find the linearization of the function at the point (0, -1).
__________
there is a formu... |
# Prime Numbers
→ Print-friendly version
It’s pretty simple to multiply two numbers and get another number.
$2 \times 3 = 6$
Here’s a question for you: What happens if we try to go the other way? For instance:
$15 = ? \times ?$
With a little thinking – remembering times tables, experimenting a bit – we can figure... |
# Heron’s Formula for Area of Triangle, Proof and Example
## Heron’s Formula
Heron of Alexandria, also known as Hero, was a Greek geometer and inventor who lived around AD 62 in Alexandria, Egypt, and whose writings preserved knowledge of Babylonian, Egyptian, and Greco-Roman mathematics and engineering for posterity... |
A train is traveling from New Orleans to Memphis at a constant speed of 79 mph. New Orleans and Tennessee are 395.1 miles apart. How long will the train take to reach Tennessee?
$R \cdot T = D$
$\frac{D}{R} = T$ we are solving for T, time
$\frac{395.1}{79} = T$
$T = 5$ |
# Wade Not In Unknown Waters: Part Three
General and Gameplay Programming
I'm going on to tell you about how programmers walk on thin ice without even noticing it. Let's speak on shift operators [lessthan][lessthan], >>. The working principles of the shift operators are evident and many programmers even don't know t... |
### Consecutive Numbers
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
### Calendar Capers
Choose any three by three square of dates on a calendar page...
### Latin Numbers
Can you create a Latin Square from multiples of a six digit number?
# Pain... |
Adiabatic quantum computation (AQC) relies on the adiabatic theorem to do calculations[1] and is closely related to, and may be regarded as a subclass of, quantum annealing.[2][3][4][5] First, a complex Hamiltonian is found whose ground state describes the solution to the problem of interest. Next, a system with a simp... |
# Bounding a prime number based equation
by Nelphine
Tags: based, bounding, equation, number, prime
P: 11 Hello all! I realize I am new to the community of online math forums, so I'm probably breaking a few etiquette rules (and possibly more important rules too - if so, please let me know and I'll fix what I can.) Ho... |
# What is the Spanish Homophonic Group?
From the math.stackexchange question: The homophonic group: a mathematical diversion:
By definition, English words have the same pronunciation if their phonetic spellings in the dictionary are the same. The homophonic group H is generated by the letters of the alphabet, subject... |
# Difference between spin and polarization of a photon
I understand how one associates the spin of a quantum particle, e.g. of a photon, with intrinsic angular momentum. And in electromagnetism I have always understood the polarization of an EM wave as the oscillations of the E and M field, not necessarily being align... |
# Show that the differential equation is homogeneous and solve $\left\{x\cos\bigg(\large\frac{y}{x}\bigg)\normalsize+y\sin\bigg(\large\frac{y}{x}\bigg)\right\}ydx=\left\{y\sin\bigg(\large\frac{y}{x}\bigg)-\normalsize x\cos\bigg(\large\frac{y}{x}\bigg)\right\}\normalsize xdy$
$\begin{array}{1 1} C=\large\frac{1}{xy}\s... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.