Khalifa's Law!

For students of class 11-12 (age 16+)
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rakeen
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Khalifa's Law!

Unread post by rakeen » Thu Feb 24, 2011 8:10 pm

Have you ever heard about khalifa's law? then help me by telling about it adn dont 4get abt to insert the link.
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Dipan
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Re: Khalifa's Law!

Unread post by Dipan » Mon Feb 28, 2011 11:07 pm

I have heard about Khalifa method which is a way to bring out the equation of a circle.I can't insert any link.A new book of math of inter 1st year has been published in this year.I have seen it in this book.But there is nothing without the formula.

Mehfuj Zahir
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Re: Khalifa's Law!

Unread post by Mehfuj Zahir » Tue Mar 01, 2011 9:54 pm

You find in any coordinate geometry books in honours specially the books of national university.

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rakeen
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Re: Khalifa's Law!

Unread post by rakeen » Thu Mar 03, 2011 5:26 pm

@Dipan which writer's?
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Dipan
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Re: Khalifa's Law!

Unread post by Dipan » Fri Mar 04, 2011 10:35 pm

7 famous teachers of Chittagong have written this book.It has been published from SN publication.You can find it in your nearest library.If you are a student of inter 1st year it will be helpful for you.

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rakeen
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Re: Khalifa's Law!

Unread post by rakeen » Tue Mar 08, 2011 3:23 pm

writerder name bolle bhalo hoto...any ill search it
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raihan khan
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Re: Khalifa's Law!

Unread post by raihan khan » Thu Mar 17, 2011 11:03 am

you will find the khalifa's law in the ''uchho madhomic jamiti o calculas'' by A.K.M. Lutfuzzaman

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rakeen
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Re: Khalifa's Law!

Unread post by rakeen » Sat Mar 19, 2011 6:12 pm

0o0o0o0o thnx raihan....but which chapter?
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Moon
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Re: Khalifa's Law!

Unread post by Moon » Sun Mar 20, 2011 7:57 pm

It is in the chapter 3 (chapter of circles). The law is nothing that much fancy; it just says that the equation of the circle going through $3$ points $A\equiv (x_1,y_1),B\equiv (x_2,y_2),C\equiv (x_3,y_3)$ is the following
\[ \frac{(x_3-x_1)(x_3-x_2)+(y_3-y_1)(y_3-y_2)}{\dfrac{x_3-x_1}{x_1-x_2}-\dfrac{y_3-y_1}{y_1-y_2}}\]
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