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Watch the clip. Post your responses to the questions in the column of your INDEX NUMBER

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Watch the clip. Post your responses to the questions in the column of your INDEX NUMBER

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Key in your name at the Title of the post.

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1. What I knew before watching the video.

2. What I learnt about the concept after watching the video.

3. What new terms (e.g. vocabulary) I learnt from the clip.

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Answers to the questions above(by:Pavithraa)

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Answers to the questions above(by:Pavithraa)

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Q1.What I knew before this video:

A1.Before I watched this video, I never knew the actual reason why numbers cannot be divided by 0. I only told myself that this is a rule that is unbreakable.
Q2.What I learnt about the concept after watching the video.
A2.Now, after watching this video, I have a clear understanding on why we cannot divide numbers by 0 and why the rule cannot be broken. Moreover, I have never explored the relationship on how the answers differ based on what number is divided by the fixed number. Thus, the graph relationship seems very interesting to me.
Q3.What new terms (e.g. vocabulary) I learnt from the clip.
A3.The new terms I learnt are:
- multiplicative inverse
- Riemann sphere

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Q1 ans: I knew before the video that you can’t divide by zero and thought that it was because anything divided by zero would still be zero.
Q2 ans: I learnt that the reason why zero is not divisible by zero is because when we multiply zero’s multiplicative inverse by zero, the number would be zero instead of one. Thus, zero has no multiplicative inverse.
Q3: Multiplicative inverse.

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1. Before watching this video, I thought that the result of any number divided by zero would be infinity.

2. I learnt that according to the multiplicative inverse, the result of zero multiplying with infinity should be 1. However, the result of any number multiplying zero is still zero. Thus, the above statement is invalid.

3. ~Multiplicative inverse
~Riemann sphere

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Q1: I knew that I could not divide any number by zero because if you multiply anything by zero it will be zero but I did not know what was the result if I divide anything by zero.
Q2: After watching the video, I have learnt why dividing by zero is an unbreakable rule, because zero has no multiplicative inverse.
Q3: Multiplicative inverse
Riemann Sphere

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1. What I knew before watching the video.

I knew that 0 divided by any other number was "impossible", and I also knew 0 * any number will still be zero.
2.What I learnt about the concept after watching the video.

I learnt if mathematicians wanted to, they could invent a new rule to make 0/0 possible. But, even if they did, it will be still be hard to figure it out as 0 has no multiplication inverse(Which I also learnt in this video), and if they used 0/infinity=1, that'll mean 1 = 2.
So I learnt that whilst it might be possible in the future, with a new mathematical rule(like the square root of -1=i), for now, 0/0 cannot be solved.
3.What new terms (e.g. vocabulary) I learnt from the clip.
The term "multiplication inverse", like, for example, the multiplication inverse of 10 is 1/10.

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Q1: Before watching this video, I knew that one could not divide by zero. That was because in order to find the number we started with, we had to multiply zero to get the number. However anything multiplied by zero equaled zero, so dividing by zero is also “impossible”

Q2: I learnt from this video that tye true reason behind why we cant divide by zero is because zero has no multiplicative inverse.

Q3. Multiplicative inverse and Riemann sphere

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1. I thought that when 0 is divided by 0, it just simply ends up as zero. I did not think about the "severe" consequences if infinity=0 was made "legal".
2. I learnt that it just doesn't make sense to divide 0 by 0. Even if we do so, it would not be really useful to mathematicians.
3. Multiplicative inverse, quotient.

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At first I thought that zero could not be divided and I stopped there. However I now I have a better understanding of why zero is unable to be divided by any numbers. I find this video very helpful to help comprehend why zero cannot be divided. Also I learned new terms like multiplication inverse. It’s is really fun to know all this information that may be able to help me in the future!

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1. i thought that a number divided by 0 gives 0
2.a number divided by 0 gives infinity
3.multiplicative inverse

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1. Before watching the video, I knew that any integer multiplied by zero would be zero but I didn't fully understand how it works
2.Now I know that zeros' multiplicative inverse would cause fluctuations in many equations thus making the equations inaccurate due to its nature and complexity.
3. Multiplicative inverse

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1. Before watching the video, I thought that whatever number is divided by 0, the answer would end up as infinity or just simply 0.
2. After watching the video, I learnt that numbers cannot be divided by zero is because zero has no multiplicative inverse.
3. Riemann sphere & multiplicative inverse

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1.I actually knew that 0 was this infinitely dangerous number that we use everyday. I have also watched this video before. There is this show on Netflix, A Trip To Infinity, where they explain 0, infinity and 1.
2. I have learnt (before I watched this video) about the multiplicative inverse (-1 squared).
3.I have learnt to use the word multiplicative inverse although I could say the inversion of the specific number.

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Q1 : At first i knew that you could not divide by zero because i have tried it on a calculator and said math error
Q2 : After watching the video i learnt why you could not divide a number by zero and learnt the concept about it
Q3 : I knew what was multiplicative inverse was before so ill say riemann sphere

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1. i knew that a number divided by 0 is undefined

2. i learned what is a multiplicative inverse, and that 0 has no multiplicative inverse which is why we can't divide by 0

3. multiplicative inverse and riemann sphere

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By DHANVIN

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2 I did not know that any number divided by zero was infinity 

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2 I did not know that any number divided by zero was infinity 

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Because zero is nothing and what it is divided into will still be nothing

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Q1  i knew no number could be divided by zero because if you take a number and multiply it by zero you will get zero.

Q2 after watching the video i learnt that dividing anything by zero is not possible because zero has no multiplicative inverse

Q3 multiplicative inverse

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1. At first, i thought that it was impossible for 0 to be divided by 0
2. I learned that 0 divided by 0 is not infinitely and the reason 0 cannot be divided by 0 is because it has bot multiplicative inverse
3. Multiplicative inverse
Riemann sphere

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1. Before watching the video I knew that nothing can be divided by 0

2. After watching the video I know why nothing can be divided by 0

3. Multiplicative inverse
Riemann sphere

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1. Before watching the video, I knew that 0 cannot be divided but did not understand the reason why
2. After watching the video, I learnt that mathematicians have broken rules when they determined the square root of -1 is i
3. The new word I learnt is 'multiplicative inverse'

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I learnt that any number would not be able to be divided by zero, due to it leading to multiple possible answers

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I knew that 0 was mathematically not divisible. I tried it on the calculator and it said "MATH ERROR" 😐

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I knew that we should not divide by 0.

After watching the video, I learnt that dividing a number by 0 cannot be infinity as if it is 0 multiplied by infinity would be 1 but it would also be 2 and all other numbers

I learnt about the reelin sphere

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I learnt that if the multiplicative inverse of zero is 1 over 0 and 1 over 0 is infinity, then 0 x ∞ is 1.
SO...
(0 x ∞) + (0 x ∞) = 2

HOWEVER...
If (0 x ∞) + (0 x ∞) = 2 and we simplify the equation

THEN...
It will be 0 x ∞ = 2, which is against what the multiplicative inverse of zero is supposed to be.

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I learnt:

Multiplicative Inverse

Riemann Sphere

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There is NO multiplicive inverse of zero. Therefore, it cannot be divided

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Before watching the video:
I thought that any number divided by zero was impossible (it is) but i also thought that dividing by zero was infinity
After watching the video:
I learnt that dividing by smaller numbers that get close to zero tends towards infinity but when the number is divided by zero it is not infinity because when we divide, the divisor has to have a multiplicative inverse but zero has no multiplicative inverse so that means it is impossible.
mathematical terms i learnt:
multiplicative inverse