Search found 441 matches

by tanvirab
Mon Dec 26, 2011 3:34 pm
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

Masum wrote: may we define it some other way?
Sure. that's what I have asked probably 20 times in this thread. What is the definition of $0/0$? Define it.
by tanvirab
Mon Dec 26, 2011 3:09 pm
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

I have a logic to present. See in real numbers $i$ is undefined but that was not bound by the definitions of real numbers only. Only by definition, as you are claiming, it is simply impossible to bound the numbers, whatever it is-real or imaginary. Am I clear or there are obstacles? So I can't agre...
by tanvirab
Mon Dec 26, 2011 2:45 pm
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

But how can u prove it mathematically? You cannot. That's the point of being undefined. If something is undefined you cannot do mathematics with it. To do mathematics you need to define every object that you talk about. If you cannot say the definition of something, than there is no mathematics abo...
by tanvirab
Mon Dec 26, 2011 1:34 pm
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

Saying $0/0$ is undefined means it is not defined, in other words, it does not exist. You cannot conclude something about something that does not exist. Conclusions (and arguments) are about things that exist i.e. can be defined. Because $0*1/0$ is not equal to 1... Well how can we say that it is no...
by tanvirab
Sun Dec 25, 2011 2:27 am
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

There is no such thing as concluding that something is defined or undefined. Neither is there any such things as proving defined or undefined. A definition is something that you start with and derive other things from it. You cannot just say something that does not exist, and then make arguments abo...
by tanvirab
Fri Dec 23, 2011 5:01 am
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

Let $\frac00=k\in\mathbb R$ In other words, all of your argument is based on this assumption. But who told you that this assumption is true? No one. Because it is not true. You cannot assume something that is not true and then make arguments based on that. For any of your arguments to make any sens...
by tanvirab
Fri Dec 23, 2011 12:29 am
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

Just to make it clear, when you say something about something you need to know what that things is i.e. you need to define it. For example when I say $3/4$ I can define it, but when I say $3@4$ that does not mean anything, because I have not defined it. When I say $0+0$ I can define it, but no one h...
by tanvirab
Fri Dec 23, 2011 12:25 am
Forum: Physics
Topic: spark...
Replies: 5
Views: 2482

Re: spark...

I think that's photo-electron effect. Microwave ovens work by using microwave waves, which hit the electrons in the metal.
by tanvirab
Fri Dec 23, 2011 12:23 am
Forum: Higher Secondary Level
Topic: Factorial
Replies: 6
Views: 2712

Re: Factorial

photon wrote:my teacher once gave me that Proof( not by me0,
$n! =n(n-1)!$
Or,$(n-1)! = n(n-1)!/n =n!/n$
Putting n = 1, we have
$O! = 1!/1=1$
Here you need to define $1!$ first. This is also acceptable. But usually $0!$ is defined first then all the other positive integer factorials are derived from it.
by tanvirab
Fri Dec 23, 2011 12:20 am
Forum: Higher Secondary Level
Topic: Prove me wrong
Replies: 95
Views: 29684

Re: Prove me wrong

No. You still need to define $0/0$ before making arguments about it. What is $0/0$?