How do you define "Undefined"?

Does it mean that an expression has many different values?

Is \(\sqrt { -1 } \) undefined?

Is \({ 0 }^{ 0 }\) undefined?

But the main question is:-

\(Is\quad { 0 }^{ { 0 }^{ ...........\infty \quad times } }\quad undefined?\quad Or\quad it\quad doesn't\quad exist?\)

One way to solve it:-

\(x={ 0 }^{ { 0 }^{ ...........\infty \quad times } }\\ \therefore x={ 0 }^{ x }\quad \\ If\quad we\quad take\quad x\quad as\quad zero,\quad we\quad get,\\ 0={ 0 }^{ 0 }\quad which\quad is\quad not\quad true.\\ If\quad we\quad take\quad x\quad as\quad n,\quad where\quad n\neq 0,\\ we\quad get\quad n={ 0 }^{ n }.\\ \therefore n=0,\quad which\quad is\quad not\quad true.\\ \\ So\quad this\quad proves\quad that\quad { 0 }^{ { 0 }^{ ...........\infty \quad times } }\quad is\quad not\\ undefined,\quad but\quad it\quad doesn't\quad exist.\\ \\ \\ \\ \)

How is it possible that a given value doesn't exist?

There are 4 types of answers to all mathematical questions:-

1) Finite

2) Infinite

3) Undefined

4) Imaginary

So how is it possible that it doesn't exist? Can you give any more examples of expressions whose value doesn't exist?

Can you say that this is undefined?

Plot twist: Another way to solve:-

\(x={ 0 }^{ { 0 }^{ ...........\infty \quad times } }\\ \therefore { 0 }^{ x }={ 0 }^{ { 0 }^{ ...........\infty \quad times } }\\ \therefore { 0 }^{ x }={ 0 }^{ x }\\ All\quad values\quad of\quad x\quad except\quad 0\quad satisfy\\ this.\quad So\quad x\quad is\quad undefined.\\ \\ \\ \\ \\ \\ \)

Now we have 2 values of x-> Undefined and doesn't exist.

Is there anyone who can clear my confusion?

I request you all to give your views and solutions in the comment box. I will be highly obliged.

No vote yet

1 vote

×

Problem Loading...

Note Loading...

Set Loading...

Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

Sort by:

TopNewestIt is Undefined..check it out below

There are 7 indeterminant forms namely,

\(\frac{0}{0}, \frac{\infty}{\infty}, \infty - \infty, \infty \times 0, \infty^{0}, 0^{0}, 1^{\infty} \)

here \(0\), \(1\) and \(\infty \) are tending \(0\) and tending \(\infty\)But

\(\frac{exact 0}{exact 0}, \frac{tending0}{exact 0}, \infty + \infty, \infty \times \infty, \infty^{\infty}, \pm \infty\)

Are undefined

Let me explain further

\(exact 1^{\infty} = 1\)

But

\(tending 1 ^{\infty}\) is indeterminant

Another example

\(\frac{exact 0}{tending 0} = 0\)

But

\(\frac{tending 0}{tending 0}\) is indeterminant

Log in to reply

Thank you so much for the explanation

Log in to reply

You missed indeterminant form...

Log in to reply

Thanks. But please tell me more about indeterminant form.

Log in to reply

Is there any difference between indeterminant and undefined?

Log in to reply

hmmmmmmmm

Log in to reply

{ y }^{ x{ y }^{ y } }

Log in to reply

kuch bhi

Log in to reply