Does 0.999 Equal 1? Maths Project

  • Thread starter chickenguy
  • Start date
In summary, the conversation is about whether 0.99999... is equal to 1 and if there are any special opinions on this topic. The other person suggests asking a teacher about significant figures and states that it is correct to reduce the number of significant figures. They also mention that it is not a matter of opinion, but a mathematical identity. The conversation ends with the reminder that the topic has already been discussed in previous threads.
  • #1
chickenguy
16
0
HI epople, i am doing a project on maths and i would like to know this first of all. i am telling you that 0.99999...=1, do you think this is correct or incorrect and do you have any special opinions?
 
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  • #2
Ask your teacher about significant figures.
It's correct to the extent that you reduce the number of sigfigs
 
  • #3
Yes they are equal, just like the limit for [tex]x \rightarrow \infty[/tex] of 1/x is 0.
Just remember that it is not a matter of opinion or polling, but a mathematical identity!
 
  • #4
You've already posted several threads that are virtually identical to this one.

Thread closed.

- Warren
 

1. What is the significance of the mathematical statement "0.999 = 1"?

The statement "0.999 = 1" is a mathematical equality, meaning that the two expressions are equivalent and represent the same value. In this case, both 0.999 and 1 represent the number one, and therefore, the statement is true.

2. How can 0.999 be equal to 1 when they are visually different?

Although 0.999 and 1 may appear different, they represent the same value in the decimal system. Just like how 0.5 and 1/2 are different representations of the same value, 0.999 and 1 are also equivalent representations of the number one.

3. Can you prove that 0.999 equals 1?

Yes, there are various ways to prove that 0.999 is equal to 1. One way is to use algebra and show that 0.999 can be written as 9/10 + 9/100 + 9/1000, which is equal to 1. Another way is to use the concept of limits in calculus and show that as the number of 9s in 0.999 approaches infinity, the value approaches 1.

4. Why is this statement often debated and misunderstood?

This statement is often debated because it goes against our intuition and common sense. We are used to thinking of 0.999 and 1 as two distinct numbers, and it can be challenging to accept that they are actually the same value. Additionally, the concept of infinity and limits can be difficult to grasp, leading to misunderstandings about the equality of 0.999 and 1.

5. Does this equality have any practical applications in the real world?

Yes, the equality of 0.999 and 1 has practical applications in various fields such as physics, engineering, and computer science. In these fields, precise calculations and measurements are necessary, and the concept of 0.999 = 1 is used to represent infinitesimal differences between numbers. It also plays a role in the understanding of infinite series and limits in calculus.

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