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# Count the number of trend changes in a vector.
23 views (last 30 days)
Sebastian Holmqvist on 12 Jul 2012
I need to count the number of times a vector increases/decreases. E.g
vec = [0 0 1 2 4 4 2 0 1 2 3]
diff(vec)
ans =
[0 1 1 2 0 -2 -2 1 1 1]
would evidently yield 4 trend changes. I don't wish to count the zero a... | HuggingFaceTB/finemath | |
# Inverse Trigonometric Functions
## Trigonometry Inverse
We already know about inverse operations. As we know addition and subtraction are inverse operations, and multiplication and division are inverse operations. Each operation has the opposite of its inverse. Similarly, inverse functions of the basic trigonometri... | HuggingFaceTB/finemath | |
Published March 12, 2018 by
# Nth Even Fibonacci Number
Nth Even Fibonacci Number
I this post, we'll learn about how to calculate Nth Even Fibonacci Number.
The Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after t... | HuggingFaceTB/finemath | |
# How power produced by a solar cell is affected by its distance from a light source.
How power produced by a solar cell is affected by its distance from a light source.
Theory
I expect that as the solar cells are moved closer the light source the higher the power they will produce.
As light moves away from the sou... | HuggingFaceTB/finemath | |
Download Download Presentation # HEAPSORT COUNTING SORT RADIX SORT
Download Presentation ## HEAPSORT COUNTING SORT RADIX SORT
- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
##### Presentation Transcript
2. HEAPSORT • O(n lg n) worstcaselikemergesort... | HuggingFaceTB/finemath | |
# Disable one angle of rotation
I'd like to disable one angle of rotation of an object rotating in 3D space. Imagine a camera rotating around and displaying objects as they are in space. I'd like this object to be fixed on the horizontal axis (always in the center of the camera view) and follow the camera rotation on ... | HuggingFaceTB/finemath | |
• Magoosh
Study with Magoosh GMAT prep
Available with Beat the GMAT members only code
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#### Solution for 817 is what percent of 2800:
817:2800*100 =
(817*100):2800 =
81700:2800 = 29.18
Now we have: 817 is what percent of 2800 = 29.18
Question: 817 is what percent of 2800?
Percentage solution with steps:
Step 1: We make the assumption that 2800 is 100% since it is our output value.
Step 2: We next... | HuggingFaceTB/finemath | |
# Quick Puzzles - Second Set
1. Draw a 3 by 3 grid like that shown and colour the squares either Red , White ,Blue so that each Red touches a White eachWhite touches a Blue each Blue touches a Red 2. Make a copy of a triangle like that shown with four circles along each edge. Use the numbers 1 to 9. putting one in ea... | HuggingFaceTB/finemath | |
# Chapter 9 - Section 9.3 - Exponential Functions - Exercise Set - Page 560: 61
No
#### Work Step by Step
We are given the function $f(x)=1.5x^{2}$. In general, exponential functions are written in the form $f(x)=b^{x}$ (where $b\gt0$, $b\ne1$, and $x$ is a real number). In other words, exponential functions consist... | HuggingFaceTB/finemath | |
# trig integrals
• Sep 16th 2008, 02:28 PM
skabani
trig integrals
i have a calc test coming up and im not sure how to do the following, if you could show me how, it would be greatly appreciated...thanks!
1. integral (where b= pi/2, a = 0) sin^2x cos^2 x dx
2. integral (where b= pi/4, a = 0) sec^4 x tan^4 x dx
3. in... | HuggingFaceTB/finemath | |
# Thread: differentiating through the integral
1. ## differentiating through the integral
The problem is as follows:
Solve for f(x), given
$f(x) = x + \int^{x}_{0}{(x-2t)f(t) dt}$
What I did:
1. Differentiate both sides wrt x, and partially differentiate through the integral.
$f'(x) = 1 + \frac{d}{dx} \int^{x}_{0}... | HuggingFaceTB/finemath | |
## Difference of Square Binomial Expansion Question
To simplify
$(3-x)^4(3+x)^4$
notice that
$9-x^2=(3-x)(3+x)$
so
\begin{aligned} (3-x)^4(3+x)^4 &= (9-x^2)^4 \\ &= {}^4C_4 9^4(-x^2)^0+ {}^4C_3 9^3(-x^2)^1+{}^4C_2 9^2(-x^2)^2 \\ &+ {}^4_1 9^1(-x^2)^3+{}^4C_0 9^0 (-x^2)^4 \\ &= 6561-2916x^2+486x^4-9x^6+x^8 \end{aligned... | HuggingFaceTB/finemath | |
# Eggs and Boxes (Age 6)
Age 6
## The Activities
1. Topics: Numbers, Codes, Algebra: The Cat in Numberland, Chapter 3, by I. Ekeland. In this chapter the letters come to visit the numbers, and we learn about letter/number ciphers and letters standing in for numbers.
2. Topic: Algebra: I made problems of the form ... | HuggingFaceTB/finemath | |
If you find any mistakes, please make a comment! Thank you.
## Stabilizer commutes with conjugation
Solution to Abstract Algebra by Dummit & Foote 3rd edition Chapter 4.1 Exercise 4.1.1
Solution: First we prove that $\mathsf{stab}_G(b) = g \mathsf{stab}_G(a) g^{-1}$.
($\subseteq$) If $x \in \mathsf{stab}_G(b)$, the... | HuggingFaceTB/finemath | |
It’s time to bring the maths lesson outdoors. But don’t worry, it’s merely your local supermarket.
The supermarket is one of the best examples of a place where maths is real. It’s a great place for practising measurement, estimation, and quantity. Since trips to the supermarket usually affect everyone in the family, t... | HuggingFaceTB/finemath | |
# What is 1% of 792?
## Solution and how to solve it
1% of 792 is 7.92
Calculating the percent of a number is simple, but can be a bit tricky if you aren't careful. Luckily, it only requires a few basic operations to get to the solution: multiplication and division. If you haven't learned what percentage is yet, or ... | HuggingFaceTB/finemath | |
# For her phone service, Martina pays a monthly fee of \$28 , and she pays an additional \$0.06 per minute of use. The least she has been charged in a month is \$88.72 . What are the possible numbers of minutes she has used her phone in a month? Use m for the number of minutes, and solve your inequality for m .
1
by l... | HuggingFaceTB/finemath | |
## Skewed Distribution Mean Median
###### Readings: OpenStax Textbook - Chapters 1 8 (online ...
Chapter 12: Probability and Risk Chapter 14: The Perception of Randomness Still important ideas ... (from worksheet) - the standard deviation (from worksheet) Contrast positively skewed and negatively skewed distributions... | HuggingFaceTB/finemath | |
GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 22 Feb 2019, 12:35
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... | HuggingFaceTB/finemath | |
|
# Puzzle No. 030 - Cookie Conundrum
Edit Page Last Edit:
• Southern Street - Minnie
• 30 Picarats
### EditHints
1
Visualizing exactly what the puzzle is describing as a scene in your mind might be all you need to figure this one out
2
Try and break the problem down into numbers. If one out of 15 cookies is eat... | HuggingFaceTB/finemath | |
1. Chapter 7 Class 12 Integrals (Term 2)
2. Serial order wise
3. Ex 7.5
Transcript
Ex 7.5, 1 𝑥/((𝑥 + 1) (𝑥 + 2) ) Solving integrand 𝑥/((𝑥 + 1) (𝑥 + 2) ) We can write it as 𝑥/((𝑥 + 1) (𝑥 + 2) ) " " = 𝐴/((𝑥 + 1) ) + 𝐵/((𝑥 + 2) ) 𝑥/((𝑥 + 1) (𝑥 + 2) ) " " = (𝐴(𝑥 + 2) + 𝐵 (𝑥 + 1))/((𝑥 + 1) (𝑥 + 2)... | HuggingFaceTB/finemath | |
# The Logic of Chance/Chapter I
THE LOGIC OF CHANCE.
CHAPTER I.
ON CERTAIN KINDS OF GROUPS OR SERIES AS THE FOUNDATION OF PROBABILITY.
§ 1. It is sometimes not easy to give a clear definition of a science at the outset, so as to set its scope and province before the reader in a few words. In the case of those scien... | open-web-math/open-web-math | |
# TRANSFORMATIONS OF FUNCTIONS
Transformations of Functions :
In this section, we will learn, how to do different types of transformations of functions like translation, stretch, compression and reflection.
To make the students to understand the different types of transformations, we have explained each kind of tran... | HuggingFaceTB/finemath | |
# Centripetal Force
A Centripetal Force ( from Latin centrum , “centre” and peter , “to seek” ) is a force that causes a body to follow a curved path . Its direction is always orthogonal to the motion of the body and of the instantaneous center of curvature of the path towards the fixed point . Isaac Newton described... | HuggingFaceTB/finemath | |
# Rle Iterator Problem
## Description
LeetCode Problem 900.
We can use run-length encoding (i.e., RLE) to encode a sequence of integers. In a run-length encoded array of even length encoding (0-indexed), for all even i, encoding[i] tells us the number of times that the non-negative integer value encoding[i + 1] is r... | HuggingFaceTB/finemath | |
Mathematics 5
Conics
Applications
# Mathematics Conics Ellipse
### 1. Ellipse: Construction:
An ellipse is defined as:
dist (P,F) + dist(P,F') = 2a
P is any point on the curve. F and F' are the two focii of the ellipse; and "dist" is the distance between the two related points.
Let's express the above equation:... | HuggingFaceTB/finemath | |
Helga and Rob like corn on cob. Each prefers to eat the gene : GMAT Problem Solving (PS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack
It is currently 16 Jan 2017, 09:53
Jan 16th:
All GMAT Club CATs and Quizzes are Open Free for 24 hrs. See our Holiday Policy ... | HuggingFaceTB/finemath | |
# CFA Level I: Hypothesis Testing
Good evening,
As I keep practicing towards the Level I exam, I want to finish my review of the Quantitative Finance material. This post will hence be the follow up of my previous post. I will here discuss how you test a hypothesis on some statistical measure.
## General Concept
Th... | HuggingFaceTB/finemath | |
# Homework Help: Force on a dielectric slab
1. Sep 3, 2014
### albega
...partially inserted between the plates of a parallel plate capacitor.
Imagine a parallel plate capacitor, of plate area l*d, separation d, filled with a linear dielectric of susceptibility X. Now imagine sliding the dielectric out of the plates... | HuggingFaceTB/finemath | |
# Is $n$ a multiple of 5 if $n^2$ is?
Say $n$ is a natural number and $n^2$ is a multiple of 5. Does that mean $n$ is a multiple of 5?
This seems to be true. If we look at squares:
\begin{align*} 2^2 &= 4 & 3^2 &= 9 & 4^2 &= 16 & \mathbf{5^2} &\mathbf= \mathbf{25} \\ 6^2 &= 36 & 7^2 &= 49 & 8^2 &= 64 & 9^2 &= 81 \\ ... | HuggingFaceTB/finemath | |
# LCM
Common multiple of three numbers is 3276. One number is in this number 63 times, second 7 times, third 9 times. What are the numbers?
Result
a = 52
b = 468
c = 364
#### Solution:
$a=3276/63=52$
$b=3276/7=468$
$c=3276/9=364$
Our examples were largely sent or created by pupils and students themselves. Ther... | open-web-math/open-web-math | |
# Linear Inequality (One Variable)
How to solve a linear inequality (one variable): 2 examples and their solutions.
## Example 1
### Solution
Solve the inequality just like solving an equation.
First move +5 to the right side.
Then the left side is 7x.
And the right side is 19, change the sign of +5, -5.
19 - 5 = ... | HuggingFaceTB/finemath | |
# Difference between revisions of "2021 AIME I Problems/Problem 8"
## Problem
Find the number of integers $c$ such that the equation $$\left||20|x|-x^2|-c\right|=21$$has $12$ distinct real solutions.
## Solution 1 (Piecewise Function: Analysis and Graph)
We take cases for the outermost absolute value, then rearrang... | open-web-math/open-web-math | |
When we multiply two or more polynomials together, we use our associative, commutative, and distributive properties. Basically, the simplest operation occurs when we multiply a monomial by another monomial. To perform this operation, we multiply the number parts together and the variable parts together. As we move into... | HuggingFaceTB/finemath | |
Learn all Concepts of Chapter 3 Class 10 (with VIDEOS). Check - Linear Equations in 2 Variables - Class 10 1. Chapter 3 Class 10 Pair of Linear Equations in Two Variables
2. Serial order wise
3. Examples
Transcript
Example 19 A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go ... | HuggingFaceTB/finemath | |
Multiples of 280 Welcome to the Multiples of 280 page. Here we will first teach you everything you will ever need to know about the multiples of 280, and then give you a study guide summary of everything we taught you to make sure you remember it all. Use this page to look up facts and learn information about the multi... | HuggingFaceTB/finemath | |
Working Capital Turnover Ratio What is Working Capital Turnover Ratio?
Working Capital Turnover Ratio helps in determining that how efficiently the company is using its working capital (current assets – current liabilities) in the business and is calculated by diving the net sales of the company during the period wit... | HuggingFaceTB/finemath | |
#### What is 0.7 percent of 817?
How much is 0.7 percent of 817? Use the calculator below to calculate a percentage, either as a percentage of a number, such as 0.7% of 817 or the percentage of 2 numbers. Change the numbers to calculate different amounts. Simply type into the input boxes and the answer will update.
#... | HuggingFaceTB/finemath | |
# Construct
Construct a rhombus ABCD, if the size of the diagonal AC is 6 cm and diagonal BD 8 cm long.
a = 5 cm
### Step-by-step explanation:
We will be pleased if You send us any improvements to this math problem. Thank you!
Tips to related online calculators
Pythagorean theorem is the base for the right triang... | HuggingFaceTB/finemath | |
# What is the R squared of a regression where none of the variables are collinear?
If a regression has 100 observations and 100 variables and none of them are collinear, what is the r squared? I know that it means that the full rank assumption is satisfied, so does this mean the r squared equals 1? Also, what would th... | HuggingFaceTB/finemath | |
## prime factoraization of 3600 by cube roots
Question
prime factoraization of 3600 by cube roots
in progress 0
4 weeks 2021-08-19T00:58:50+00:00 1 Answer 0 views 0
=2|3600
2 |1800
2|900
2 |450
5 |225
5 |45
3|9
3|3
|1
therefore,3600=(2×2)×(2×2)×(3×3)×(5×5)
=2×2×3×5=60 | HuggingFaceTB/finemath | |
1. ## Cones
I need help solving this question... i dont even know where to start... so confused:
Sand is being poured onto a conical pile at the rate of 9 m^3/h. Friction forces in the sand are such that the slope of the sides of the conical pile is always 2/3.
a. How fast is the altitude increasing when the radius ... | HuggingFaceTB/finemath | |
## Precalculus (6th Edition)
$x=\pm 3$
$\log _{5}\left( x+2\right) +\log _{5}\left( x-2\right) =1\Rightarrow \log _{5}\left( \left( x+2\right) \left( x-2\right) \right) =\log _{5}5$ $\Rightarrow \left( x+2\right) \left( x-2\right) =5\Rightarrow x^{2}-4=5\Rightarrow x^{2}=9\Rightarrow x=\pm 3$ | HuggingFaceTB/finemath | |
# Formula help
Hi, need help with a formula. I’m new to formulas, and trying to set up an excel sheet with formulas into Monday.
I have set up three number colums, and one formula colum at the end. In the formula colum I need to use both sum and minus, and collect the date from the three colums.
In excel it looks li... | HuggingFaceTB/finemath | |
The Infinity Workshop – SCOPES Digital Fabrication
### Lesson Details
Subjects
Age Ranges
Topic Tags
Standards
Author
You need to login or register to bookmark/favorite this content.
### Author Desmond Hearne Morrey
Informal educator
Desmond is a student at Oberlin College with a major in philosophy and planned min... | HuggingFaceTB/finemath | |
# JEE Main & Advanced Mathematics Geometric Progression Properties of G.P.
## Properties of G.P.
Category : JEE Main & Advanced
(1) If all the terms of a G.P. be multiplied or divided by the same non-zero constant, then it remains a G.P., with the same common ratio.
(2) The reciprocal of the terms of a given G.P. f... | HuggingFaceTB/finemath | |
# In how many ways can 4 women draw water from 4 taps if no tap remains unused?
Question:
In how many ways can 4 women draw water from 4 taps if no tap remains unused?
Solution:
Given: We have 4 women and 4 taps
To Find: Number of ways of drawing water
Condition: No tap remains unused
Let us represent the arrang... | HuggingFaceTB/finemath | |
You'll have a hard time inverting a matrix if the determinant of the matrix … : If one of the pivoting elements is zero, then first interchange it's row with a lower row. If the determinant of the matrix is zero, then the inverse does not exist and the matrix is singular. If we calculate the determinants of A and B, we... | HuggingFaceTB/finemath | |
If you are aware of elementary facts of geometry, then you might know that the area of a disk with radius $R$ is $\pi R^2$ .
The radius is actually the measure(length) of a line joining the center of disk and any point on the circumference of the disk or any other circular lamina. Radius for a disk is always same, irr... | HuggingFaceTB/finemath | |
# MAS115 Mathematical Investigation Skills: Python
Dr Alexander Fletcher
Autumn 2021/22
## Lecture 2: Intended learning outcomes
By the end of this lecture, you will be able to:
• identify standard elements of a programming language;
• describe the process of writing a computer program;
• use this process to find f... | HuggingFaceTB/finemath | |
Solutions by everydaycalculation.com
## Subtract 3/56 from 8/6
1st number: 1 2/6, 2nd number: 3/56
8/6 - 3/56 is 215/168.
#### Steps for subtracting fractions
1. Find the least common denominator or LCM of the two denominators:
LCM of 6 and 56 is 168
Next, find the equivalent fraction of both fractional numbers w... | HuggingFaceTB/finemath | |
# Evaluate the expression $\sqrt{6-2\sqrt5} + \sqrt{6+2\sqrt5}$
$$\sqrt{6-2\sqrt5} + \sqrt{6+2\sqrt5}$$
Can anyone tell me the formula to this expression.
I tried to solve in by adding the two expression together and get $\sqrt{12}$ but as I insert each expression separately in calculator the answer is above $\sqrt{... | HuggingFaceTB/finemath | |
# What is the standard form of y= (x-2)(3x+2)(-x+8)?
Dec 10, 2017
$- 3 {x}^{3} + 28 {x}^{2} - 28 x - 32$
#### Explanation:
$\text{expand the first 2 factors using FOIL then multiply the}$
$\text{result by the third factor}$
$\left(x - 2\right) \left(3 x + 2\right) \leftarrow \textcolor{b l u e}{\text{first 2 fact... | HuggingFaceTB/finemath | |
## Precalculus (6th Edition) Blitzer
$685$
Formula to calculate the nth term of an arithmetic sequence is: $a_n=a_1+d(n-1)$ Here, $a_1:$ First term and $d=$ common difference Since, we have $a_1=-60$ Then $a_{160}=-60+5(150-1)=-60+745=685$ | HuggingFaceTB/finemath | |
# Output impedance
ananthu
The concept of output impedance is highly confusing to me.
I will be thankful if some body gives simple explanations to the following.
1. I undertand that in the case of current amplifiers, the out put impedance should be low and the input one should be high. In the case of voltage amplifie... | HuggingFaceTB/finemath | |
1. Chapter 6 Class 12 Application of Derivatives
2. Serial order wise
3. Examples
Transcript
Example 47 Find intervals in which the function given by f(𝑥) =310𝑥4 – 45𝑥3– 3𝑥2 + 365𝑥 + 11 is (a) strictly increasing (b) strictly decreasing f𝑥 = 310𝑥4 – 45𝑥3– 3𝑥2 + 365𝑥 + 11 Step 1: Fi... | HuggingFaceTB/finemath | |
# OptimizationExpression
Arithmetic or functional expression in terms of optimization variables
## Description
An OptimizationExpression is an arithmetic or functional expression in terms of optimization variables. Use an OptimizationExpression as an objective function, or as a part of an inequality or equality in a... | HuggingFaceTB/finemath | |
# GMAT Math : DSQ: Calculating discrete probability
## Example Questions
← Previous 1 3 4 5 6 7 8 9
### Example Question #1 : Dsq: Calculating Discrete Probability
Data sufficiency question- do not actually solve the question
A bag of marbles consist of a mixture of black and red marbles. What is the probability o... | HuggingFaceTB/finemath | |
Mandelbrot set approximation
Is there a function $f:\mathbb N\to \mathbb R$ such that $\lim_{n\to\infty} f(n) = 0$ and for every $c\in\mathbb C$:
If $z_0=0$, $z_{n+1}=z_n^2+c$ and $|z_k|<2$, then there exists a point $c'$ in the Mandelbrot set satisfying $|c-c'|<f(k)$?
Such fact would be very useful for rendering th... | open-web-math/open-web-math | |
# Exposure Factor when calculating SLE
I am studying for an exam and came across a question asking to find what the single loss expectance would be, but I am failing to understand exposure factor in the calculation.
SLE = Asset Value * exposure factor
The question: Your company owns a machine that is worth \$100,000... | HuggingFaceTB/finemath | |
FromQuarkstoQuasars
# The Physics of a Spinning Top
###### / FromQuarkstoQuasars
News
Pictured here is a a spinning top. If you throw the top out and simultaneously pull on the string, the top spins. And you get to see this top spend a lot of time balancing on the sharp tip. (I have taken the liberty of choosing a t... | HuggingFaceTB/finemath | |
GMAT Question of the Day - Daily to your Mailbox; hard ones only
It is currently 17 Oct 2019, 06:31
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customize... | HuggingFaceTB/finemath | |
## What is Hi-Lo card counting?
The Hi-Lo card counting system assigns a tag of +1 for the low cards (2, 3, 4, 5, and 6) and –1 for the high cards (10, J, Q, K, and A). The 7, 8, and 9 is assigned a tag of 0. The Hi-Lo is a balanced card counting system because there are equal numbers of +1 and –1 cards per deck.
How... | HuggingFaceTB/finemath | |
# Homework Help: Darn integral
1. Nov 16, 2009
### Void123
1. The problem statement, all variables and given/known data
I just can't crack the integral of (sin(x))^6 for some reason.
What is the exact solution to this? This is not really a homework question, as an immediate reference to an integral table would be ... | HuggingFaceTB/finemath | |
## Find the nth of each sequence a1 = 8,d = 3,n n = 16
Question
Find the nth of each sequence a1 = 8,d = 3,n n = 16
in progress 0
11 mins 2021-11-26T00:07:37+00:00 1 Answer 0
16th term of the given sequence is 53.
Step-by-step explanation:
Here, the first term (a 1) = 8
Common Difference (d) = 3
n = 16
Now ... | HuggingFaceTB/finemath | |
BrainDen.com - Brain Teasers
• 2
# Groundhog in a Hole - Yet Again
## Question
There is an infinite line of holes in an infinite field. You know there is a groundhog hiding in one of the holes. You can check a hole once a day. At night the groundhog will move one hole to the left or one hole to the right. Knowin... | HuggingFaceTB/finemath | |
# Curiosities of linearly ordered sets
Andrei Chekmasov explores order and infinity You might look at the title and ask yourself: what is a linearly ordered set? A good example of such a set would be counting the number of years that have passed since the Big Bang—the age of the universe. It will look something like t... | HuggingFaceTB/finemath | |
The square is multiply the number by itself. The integer is one type of number and it is defined both positive and negative numbers. The sum of squares is add the squares of integers and it is used in statistics. A sum of squares is an integer that is used to determine a variance and standard deviation for a group of i... | HuggingFaceTB/finemath | |
Question
1. # In Which Quadrant Is The Number 6 – 8I Located On The Complex Plane?
## Introduction
Have you ever wanted to know where the number 6-8i is located on the complex plane? If so, you’ve come to the right place. The complex plane is a way of visualizing numbers in terms of their real and imaginary parts. I... | HuggingFaceTB/finemath | |
## Question 455:
1
We need to find the z-score for the 25th percentile. We can use the percentile to z-score calculator using the 1-sided area. This will provide us with the z-score corresponding to 25% of the area under the curve. Enter .25 and you should get a z-score of -0.675. Now we just setup an equation and so... | HuggingFaceTB/finemath | |
# math
posted by on .
If you have a class of 45 students and 15 are boys what is the percentage of boys in the class
• math - ,
15/45
Divide and multiply by 100
15/45 = 0.3333 = 33.33% are boys
• math - ,
45 | HuggingFaceTB/finemath | |
A contract is to paint 3 houses. Mr brown takes 6 days to
paint a house. Mr black takes 8 days and Mr blue 12 days. Mr
brown leaves for a vacation after 8 days. Mr black works for
6 days from then.How many days would Mr blue require to
complete the contract?
Answers were Sorted based on User's Feedback
A contract is ... | HuggingFaceTB/finemath | |
Find all School-related info fast with the new School-Specific MBA Forum
It is currently 25 May 2015, 16:43
# Today:
Free Access to GMAT Club Tests - May 25th for Memorial Day!!
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice... | HuggingFaceTB/finemath | |
Re: Solving simple equations
• To: mathgroup at smc.vnet.net
• Subject: [mg122737] Re: Solving simple equations
• From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
• Date: Tue, 8 Nov 2011 07:16:16 -0500 (EST)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <201111071054.FAA03874@smc.vnet.net>
... | HuggingFaceTB/finemath | |
# a. 2x = sqr root 12x+72 b. sqr root x+5 = 5 - sqr root x c. |2x| = -|x+6| d. 5 = |x+4|+|x-1| e. |x-2| = 4 -|x-3|Please Help!!!
giorgiana1976 | Student
a) Supposing that you want to solve:
2x = sqr root (12x+72)
First you have to check for what x values, the square roots exists. To check, you have to solve the ine... | HuggingFaceTB/finemath | |
UT PHY 302L - DC circuits
Unformatted text preview:
familiari (nf3795) – DC circuits – yeazell – (58395) 1This print-out should have 16 questions.Multiple-choice questions may continue o nthe next column or page – find all choicesbefore answering.001 (part 1 of 2) 10.0 pointsYou can obtain only four 20 Ω resistor s f... | HuggingFaceTB/finemath | |
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• Print publication year: 2009
• Online publication date: June 2012
# Introduction
## Summary
Graph theory
This section presents the basic definitions, terminology and notation of graph theory, along with some fundamental results. Further information can be found in the many standard ... | HuggingFaceTB/finemath | |
## Nothing Short of a Miracle!
That’s what happened today. The occasion was a cultural night arranged by the Staff Club of NITC (no one knew one even existed, till today!). Some of the faculty got together and wrote a drama to be staged tonight. I learnt about it from Deepak sir’s blog a few days ago, and that in itse... | HuggingFaceTB/finemath | |
0
Q:
# An amount of 5,000 is invested at a fixed rate of 8 per cent per annum. What amount will be the value of the investment in five years time, if the interest is compounded every six months?
A) 7401.22 B) 3456 C) 4567 D) 7890
Explanation:
With slight modifications, the basic formula can be made to deal with co... | HuggingFaceTB/finemath | |
# How does lack of deadlock relate to computability in process calculi?
I'm interested in knowing things about the computability of concurrent programs. If you had a Turing complete language that also let you branch off new programs but had no means of communication between them there would be programs that you couldn... | open-web-math/open-web-math | |
## Conversion formula
The conversion factor from ounces to pounds is 0.0625, which means that 1 ounce is equal to 0.0625 pounds:
1 oz = 0.0625 lb
To convert 1525 ounces into pounds we have to multiply 1525 by the conversion factor in order to get the mass amount from ounces to pounds. We can also form a simple propo... | HuggingFaceTB/finemath | |
# Finding the correct formula for a sequence
As already discussed a little bit in the chatroom the following question came to my mind while studying some sequences of natural numbers.
If you need to find closed formulas (not piecewise function or polynomials which interpolate the numbers) for sequences like
(i) 2-4-... | HuggingFaceTB/finemath | |
# Mutual Inductance
Mutual inductance is the main operating principle of generators, motors, and transformers. Any electrical device having components that tend to interact with another magnetic field also follows the same principle. The interaction is usually brought about by a mutual induction where the current flo... | HuggingFaceTB/finemath | |
# Area Of Square area of square counting square units task cards how to find surface area of square pyramid. area of square to find the area of the figure above we just multiply counting unit squares to find area formula video khan academy. area of square area of squares and rectangles worksheet by groovechik teaching ... | HuggingFaceTB/finemath | |
## Choosing between simple and systematic sampling - Quiz
(go to Outline)
1
Could you do systematic random sampling in the camp pictured above?
a) Yes b) No Correct. The shelters are in neat rows. Incorrect. You certainly could do systematic random sampling. Just calculate the sampling interval, choose a starting ... | HuggingFaceTB/finemath | |
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Environmental pollution and greenhouse gas emissions are major challenges faced by our society. One possible way to mitigate global warming is to cut CO2 emiss... | open-web-math/open-web-math | |
# Investigating sampling Part 2: Confidence intervals Teacher’s notes
A downloadable version of this activity is available in the following format:
### Purpose
The purpose of this activity is to investigate the relationship between the standard error and the population standard deviation.
### Outcomes
This activit... | HuggingFaceTB/finemath | |
# proof of property
#### mathodman25
Let a 3 × 3 matrix A be such that for any vector of a column v ∈ R3 the vectors Av and v are orthogonal. Prove that At + A = 0, where At is the transposed matrix.
#### romsek
Math Team
do you mean $A^TA=0$
Consider the 3x3 identity matrix.
Clearly all the column vectors are... | HuggingFaceTB/finemath | |
# Electrodynamics/Electromagnetic Field Tensors
Before discussing Maxwell's Equations, it's useful to define two tensors for the Electromagnetic field. These two tensors will be used in the remainder of the book for several applications, including Maxwell's Equations.
## Field Tensors
We will define two field tensor... | HuggingFaceTB/finemath | |
# Given a = log2(x-7) and b = log2(3x-5) solve a=6-b?
giorgiana1976 | Student
We'll replace a and b by the given logarithms:
log2(x-7) = 6 - log2(3x-5)
log2(x-7) + log2(3x-5) = 6
We notice that the bases of logarithms from the left side are equal, therefore, we'll transform the sum into a product:
log2 (x-7)(3x-5... | HuggingFaceTB/finemath | |
# 微分方程：线性代数和NxN微分方程组
## Differential Equations: Linear Algebra and NxN Systems of Differential Equations
Learn how to use linear algebra and MATLAB to solve large systems of differential equations.
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• 完成时间大约为 8
• 中级
• 英语
### 你将学到什么
Model and solve different real world phenomena with systems of differen... | HuggingFaceTB/finemath | |
# PI Tank Calculations
This document investigates the theory behind the PI-tank, which is a subject dating back more than a century. The challenge is to find a working design that is understandable. Most amateur solutions consist of tables or equations without explanation. Some on-line calculators refer to equations s... | HuggingFaceTB/finemath | |
# [SOLVED] Epsilon-N Proof
• October 28th 2009, 04:45 PM
Roam
[SOLVED] Epsilon-N Proof
Prove that the sequence $(\frac{1}{1+n+n^4})$ converges to 0.
Here's the solution:
http://img517.imageshack.us/img517/7235/81768116.gif
Here's my problem: I don't understand why they wrote $N=\frac{1}{\epsilon}$ !
We know that $n... | open-web-math/open-web-math | |
# Objectives: Derivation Transform Pairs Response of LTI Systems Transforms of Periodic Signals Examples - PowerPoint PPT Presentation
Objectives: Derivation Transform Pairs Response of LTI Systems Transforms of Periodic Signals Examples
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Objectives: Derivation Transform Pairs Response of LTI Systems Transforms... | HuggingFaceTB/finemath | |
$$V_0$$ Initial investment
$$V_f$$ Final value of investment
$$r$$ Rate of return
# The rule of 72, and may I introduce the rule of 108? Photo credit to Pixabay
Here we will answer the question, where does the rule of 72 come from? And how can we derive similar rules for other tripling or other multiplicative factors... | HuggingFaceTB/finemath | |
# Würfeln
Würfeln ist Einstellungssache is a game of luck and high precision dice rolling. Tweak statistics to your advantage with the right mindset. Is your dice roll determination stronger than the one of your opponents? Play a game, bet on your roll attempts and show that you have mastered the art of rolling the di... | open-web-math/open-web-math | |
# What is a prime factor?
WHAT IS A PRIME FACTOR
Answers
A prime factor is a factor of a number, and that factor is also prime. A prime number is one that cannot be neatly divided into by any other number than itself and 1. Factors are numbers that do wholly divide into another number. Here "wholly divide" means "lea... | HuggingFaceTB/finemath | |
## Lecture on The Circle
Subject: Mathematic | Topics:
major objective of this lecture is to present on The Circle. In a plane,each point of the circle is at equal distance from a fixed point.The fixed point is called the centre of the circle. The distance from centre to any point on the circle is called radius of th... | HuggingFaceTB/finemath | |
# HBSE 8th Class Maths Solutions Chapter 2 Linear Equations in One Variable Ex 2.5
Haryana State Board HBSE 8th Class Maths Solutions Chapter 2 Linear Equations in One Variable Ex 2.5 Textbook Exercise Questions and Answers.
## Haryana Board 8th Class Maths Solutions Chapter 2 Linear Equations in One Variable Exercis... | HuggingFaceTB/finemath |
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