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OCR AS level maths core 1 - Index Notation

Hiya,

Generally I find this chapter quite easy, but I'm having some trouble with some harder examples such as this one in particular:

"Rewrite the following expression using index notation-"

1) 3x^2 root 2

Sorry about any difficulty about understanding the question I can't find the correct key! Note it is meant to say 3x squared times the square root of 2.

Thanks for any help! :smile:

:smile:

Study Forum Helper

I'm not sure what the question is as you need to use brackets or LaTeX to make it unambiguous.

I expect you need to use the fact that

\sqrt{2} = 2^{\frac{1}{2}}

though.

root 2 is equivalent to 2^1/2 and 3x^2 is already in index notation so i guess the answer would be (3x^2)2^1/2. Hope this helps :smile:

:smile:

Study Forum Helper

Original post by Fg=GM1M2/r^2

root 2 is equivalent to 2^1/2 and 3x^2 is already in index notation so i guess the answer would be (3x^2)2^1/2. Hope this helps :smile:

:smile:

From the position of the

\sqrt 2

, I suspect the question is supposed to be

3x^{2 \sqrt {2}}

.

(edited 12 years ago)

Original post by Mr M

From the position of the

\sqrt 2

, I suspect the question is supposed to be

3x^{2 \sqrt {2}}

.

hmmmmm... the question is ambiguous, although your version does make sense :smile:

:smile:

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