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## #1 2007-09-02 19:45:46

Daniel123
Member
Registered: 2007-05-23
Posts: 663

### Indices

Helloo all

I have an exam this morning (yes, on my first day back at school!), so I would really appreciate a quick response!

I would just like to clarify:

On a "simplify these expressions" indices question, should the final answer be left as:

?

Thanks!

Last edited by Daniel123 (2007-09-02 20:01:57)

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## #2 2007-09-02 20:00:49

luca-deltodesco
Member
Registered: 2006-05-05
Posts: 1,470

### Re: Indices

i would say 2x^-6 but it shouldn't matter for that

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The End Of All Things To Come.

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## #3 2007-09-02 20:01:39

Daniel123
Member
Registered: 2007-05-23
Posts: 663

### Re: Indices

Thanks... and for the fast answer

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## #4 2007-09-02 21:41:16

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

### Re: Indices

I'd say

personally, but as luca says it doesn't matter. Just go with your preference.

Why did the vector cross the road?
It wanted to be normal.

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## #5 2007-09-02 23:50:43

Identity
Member
Registered: 2007-04-18
Posts: 934

### Re: Indices

Fussy teachers will prefer

, I lost a ridiculous mark in a test because I had negative indices.

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## #6 2007-09-03 03:47:09

Ricky
Moderator
Registered: 2005-12-04
Posts: 3,791

### Re: Indices

Fussy teachers will prefer

I would replace "fussy" with "wrong", but perhaps it's just me.

"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."

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## #7 2017-02-19 14:50:14

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 1,273

### Re: Indices

Ricky wrote:

Fussy teachers will prefer

I would replace "fussy" with "wrong", but perhaps it's just me.

Maybe the teacher is just someone with OCD who can't bear to see negative numbers.

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

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