Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

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

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)*

Offline

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

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

The Beginning Of All Things To End.

The End Of All Things To Come.

Offline

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

Thanks... and for the fast answer

Offline

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

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.

Offline

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

Fussy teachers will prefer

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

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

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..."

Offline

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

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.

Offline