MHB Shaded region in terms of set notation

Thread starter mathlearn
Start date Oct 3, 2016
Tags

Notation Set Set notation Terms

Oct 3, 2016

mathlearn

View attachment 6053

I'm having trouble in expressing the shaded region in set notation (Thinking)

Many Thanks :)

Mathematics news on Phys.org

Oct 4, 2016

caffeinemachine

Gold Member

MHB

mathlearn said:

I'm having trouble in expressing the shaded region in set notation (Thinking)

Many Thanks :)

It's the things which are in $B$ but not in $A$. So it is $B-A$.

Oct 4, 2016

soroban

An equivalent statement: B \cap A'

Thread 'Trigonometry problem of interest'

Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other day I saw a math problem on line, which they said came from a Polish Olympiad, where you compute the length x of the 3rd side which is the same as the radius, so that the sides of length 2,x, and 11 are inscribed on the arc of a semi-circle. The law of cosines applied twice gives the answer for x of exactly 7, but the arithmetic is so complex that the...

View full post »

Thread 'Midpoint(s) of the unbounded number line'

Just chatting with my son about Maths and he casually mentioned that 0 would be the midpoint of the number line from -inf to +inf. I wondered whether it wouldn’t be more accurate to say there is no single midpoint. Couldn’t you make an argument that any real number is exactly halfway between -inf and +inf?

View full post »

Thread 'Arithmetic and our place value system'

A power has two parts. Base and Exponent. A number 423 in base 10 can be written in other bases as well: 1. 4* 10^2 + 2*10^1 + 3*10^0 = 423 2. 1*7^3 + 1*7^2 + 4*7^1 + 3*7^0 = 1143 3. 7*60^1 + 3*60^0 = 73 All three expressions are equal in quantity. But I have written the multiplier of powers to form numbers in different bases. Is this what place value system is in essence ?

View full post »

Similar threads

MHB Can You Solve This Geometry Problem with an Equation?

Mar 28, 2021

Replies: 3

Views: 1K

MHB Area of Triangle Shaded Region

Jan 20, 2021

Replies: 5

Views: 2K

B Are set notations simplifyable?

Jan 26, 2020

Replies: 11

Views: 2K

MHB Find the exact shaded area of the region in 4 overlapping circles

Jun 4, 2019

Replies: 1

Views: 3K

Set builder notation: is it ever used?

Aug 1, 2015

Replies: 3

Views: 1K

MHB Find the area of the shaded region

Jun 17, 2020

Replies: 2

Views: 1K

What is the meaning of g: [a, b] → R in set notation?

Oct 18, 2015

Replies: 2

Views: 1K

I How do we distinguish two different notations for cokernel and coimage?

Jun 24, 2025

Replies: 41

Views: 2K

MHB Solution Set in interval notation for inequality

Dec 7, 2014

Replies: 4

Views: 3K

I Rewriting the Toeplitz Conjecture

Jul 24, 2022

Replies: 7

Views: 2K

Bluesky LinkedIn

MHB Shaded region in terms of set notation

Attachments

Thread 'Trigonometry problem of interest'

Thread 'Midpoint(s) of the unbounded number line'

Thread 'Arithmetic and our place value system'

Similar threads

Hot Threads

Insights Fermat's Last Theorem

B What could prove this wrong? I'm having a dispute with friends

B About a definition: What is the number of terms of a polynomial P(x)?

B Geometry Puzzle with 20 points in a cross pattern

I Geometry problem of interest with a 3-4-5 triangle

Recent Insights

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

Insights What Exactly is Dirac’s Delta Function? - Insight

Insights Relativator (Circular Slide-Rule): Simulated with Desmos - Insight

Insights Fixing Things Which Can Go Wrong With Complex Numbers