marcsaccount
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#1
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#1
Hello everybody

I'd be really grateful if someone could help me a little with this question.

1)Write \sqrt 2 as a power of 2. So I did 2^\frac{1}{2}

The second part of the question is where I get a little stuck:
2)"Hence write 4\sqrt 2 as a power of 2.

So I went back to 2^\frac{1}{2} but with the multiple of 4, so 4 \times 2^\frac{1}{2} giving 8^{\frac{1}{2}} & then to make this have a base of 2 (8^\frac{1}{3})^{\frac{1}{2}} adding the third and a half a got 5/6 so 2^\frac{5}{6}...but this is the wrong answer. I'd be grateful if anyone could help me out a little!

Thanks
Marc
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Mr M
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(Original post by marcsaccount)
Hello everybody

I'd be really grateful if someone could help me a little with this question.

1)Write \sqrt 2 as a power of 2. So I did 2^\frac{1}{2}

The second part of the question is where I get a little stuck:
2)"Hence write 4\sqrt 2 as a power of 2.

So I went back to 2^\frac{1}{2} but with the multiple of 4, so 4 \times 2^\frac{1}{2} giving 8^{\frac{1}{2}} & then to make this have a base of 2 (8^\frac{1}{3})^{\frac{1}{2}} adding the third and a half a got 5/6 so 2^\frac{5}{6}...but this is the wrong answer. I'd be grateful if anyone could help me out a little!

Thanks
Marc
I'm going to pretend I didn't read that as I don't want to have nightmares.

4\sqrt 2=2^2 \times 2^{\frac{1}{2}}
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TenOfThem
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(Original post by marcsaccount)
4 \times 2^\frac{1}{2} giving 8^{\frac{1}{2}}
Just to make things clear

This is the line that made Mr M cry - can you see what you have done wrong
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Mr M
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(Original post by TenOfThem)
Just to make things clear

This is the line that mad Mr M cry - can you see what you have done wrong
Mad?

I was already tearful over the spelling of the title.
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TenOfThem
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(Original post by Mr M)
Mad?
I already told you
Wine
No reading glasses
Lazy
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marcsaccount
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(Original post by TenOfThem)
Just to make things clear

This is the line that made Mr M cry - can you see what you have done wrong

Yes I can 2^2 \times 2^{\frac{1}{2}} = 2^{\frac{5}{2}}

Thanks guys. Mr M, please don't be mad at me :rolleyes::rolleyes::rolleyes: Indices

Mr M & TenOfThem, thanks very much. My first thread!
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Mr M
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(Original post by marcsaccount)
Yes I can 2^2 \times 2^{\frac{1}{2}} = 2^{\frac{5}{2}}

Thanks guys. Mr M, please don't be mad at me :rolleyes::rolleyes::rolleyes: Indices

Mr M & TenOfThem, thanks very much. My first thread!
Welcome to TSR! Don't let me put you off posting!
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