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#1 2013-05-14 15:40:17
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Power of 2.2 ?
How do I raise this number 0.9176 to the power of 2.2 ?
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#2 2013-05-14 15:54:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Easiest way for pure calculation like this is to use a calculator.
0.82763241287978638037...
How does the calculator do it? One way is the Taylor series:
This will provide six places of accuracy.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3 2013-05-14 16:34:47
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
bobby can this be simplified, without the long equation ? 
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#4 2013-05-14 16:59:43
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Of course it can but at the price of accuracy. Or one could try a Pade approximant...
How much accuracy are you interested in? It would also be wise to tell me what it is for.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#5 2013-05-15 00:49:59
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
It's for a math problem, is there a calculator function that can do this ?
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#6 2013-05-15 00:55:44
- ShivamS
- Member
- Registered: 2011-02-07
- Posts: 3,648
Re: Power of 2.2 ?
That depends on the calculator. Usually you type 0.9176 and then press y^x and then 2.2
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#7 2013-05-15 01:03:02
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
I got 0.84198976
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#8 2013-05-15 01:06:09
- ShivamS
- Member
- Registered: 2011-02-07
- Posts: 3,648
Re: Power of 2.2 ?
Hi; It should be around 0.82
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#9 2013-05-15 01:16:36
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Hi
I got 0.84198976
Woops you did something wrong. What did you do?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#10 2013-05-15 02:04:40
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
I did square root on the calculator 
It isn't yRoot on the calculator ?
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#11 2013-05-15 02:06:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Why did you use square root?
if you have a calculator then enter .9176 press y^x key and then press 2.2
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#12 2013-05-15 02:15:53
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
Why did you use square root?
if you have a calculator then enter .9176 press y^x key and then press 2.2
Where is this on the Windows Calculator ?
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#13 2013-05-15 02:21:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Can you see this image. Look at the middle key, it says x^y.
Enter .9176
Then press x^y
Enter 2.2
Then press =
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#14 2013-05-15 02:39:34
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
Windows8 calculator is not the same.
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#15 2013-05-15 02:48:43
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Get into the scientific mode. Then follow the instructions in the previous posts.
Here is a good tutorial.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#16 2013-05-15 03:16:44
- SuperLynx
- Member
- Registered: 2009-06-28
- Posts: 335
Re: Power of 2.2 ?
Now I get;
0.8276.............
Correct, found the key
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#17 2013-05-15 03:29:04
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Power of 2.2 ?
Okay, very good.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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