Shruti !!! Active member
| Subject: Square Roots!!!!!!!! Thu Jun 18, 2009 2:11 pm | |
| hey ppl hi i'm back aft a long time....... but i need ur help .... ne1 know an easier way 2 find out square roots........ well no endin wit 5 r easy....but d other....... plz plz tell me if u know an easier method .....or ne trick 2 find out square root lookin forward 2 ur help!!!!!!!! thank u!!!!!!! |
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deboshree Active member
| Subject: Re: Square Roots!!!!!!!! Fri Jun 19, 2009 1:08 am | |
| shruti dear
this is one method listed on most of the sites
so i m giving this:
check it out:
Here's one method for doing so. If you're good with long division, here's a quick way to find pretty accurate square roots without the aid of a calculator. Let's try 24.6.
- Make a guess. It can be a very bad guess. It doesn't matter. You can even guess 1. Let's try 5 since 52 is 25, which is pretty close to 24.6.
- Divide 24.6 by 5. 24.6 / 5 = 4.92.
- Now, comes the trick: Pick a new guess between 5 and 4.92 and divide it into 24.6 again. Let's try 4.95. 24.6 / 4.95 = 4.96. 4.96 is pretty close to 4.9598 which is the actual square root of 24.6.
- Repeat steps 2 and 3 to any desired level of accuracy. The
further you go, the harder the long division becomes. But the first few cycles yield a pretty close answer.
The reason this works is because n*n = 24.6 and n = 24.6 / n. Therefore, the real square root will always be somewhere between 24.6 / n and n. |
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Shruti !!! Active member
| Subject: Re: Square Roots!!!!!!!! Tue Jun 23, 2009 2:07 pm | |
| thank u debo........... actually dis is really gud..... i'll try wit larger nos n hope i get it........ neways... trhanks lots!!!!!!!!!!
ne1 else has any other method......pls share it! |
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deboshree Active member
| Subject: Re: Square Roots!!!!!!!! Fri Jun 26, 2009 12:39 am | |
| its ollrite shruti di( ) , u dun have to say thanks. |
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vikram04 Active member
| Subject: Re: Square Roots!!!!!!!! Fri Dec 16, 2011 7:37 pm | |
| also know magic of square here http://www.goiit.com/posts/list/0/community-shelf-the-magic-of-squares-1068246.htm shruti, i thinks u shuld join an online education forum like www.goiit.com to better prepare for jee or board exam... me n my friends benefited alot from this.
you can find here chapter wise study topics at http://www.goiit.com/posts/show/813407/content-superposition-of-waves-804242.htm |
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| Subject: Re: Square Roots!!!!!!!! | |
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