hba
Equation of a circle with ends of diameter at (3,2) and (5,6) is :



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hba
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@hartnn @waterineyes I have no clue about this one........

hartnn
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that is simple.

hartnn
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midpoint is centre

waterineyes
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Find the distance between and divide it by 2 to find radius..

hartnn
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distance between the two points = diameter =2r

waterineyes
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Do you know how to find midpoint or not??

hba
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I know nothing lol but i am going to give you a tutorial on Conic section soon promise :D

hba
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@waterineyes noooooooo

hartnn
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u don't know how to find midpoint ? thats news...
just take the average of coordinates.

hba
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x+y/2 but x1 or x2

hartnn
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for xcoordinate of midpoint, u take average of xcoordinates of endpoints

hartnn
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(3+5)/2

waterineyes
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Sorry net stopped working..

waterineyes
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And I think your mind too.. @hba

waterineyes
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\[Midpoint(x,y) = (\frac{x_1 +x_2}{2}, \frac{y_1+y_2}{2})\]

hba
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@waterineyes Yeah right lol and [Math processing error ]
Anyways @hartnn I remember (x,y)=(x1+x2/2,y1+y2/2)

hba
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@waterineyes I cannot see latex

hartnn
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so whats the midpoint ? centre

hba
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(x,y)=(1,2)

hartnn
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thats correct centre

hartnn
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now find radius

waterineyes
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Just refresh your page then..

hba
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So i use the old radius formula ?

hba
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\[r=\sqrt{g^2+f^2c}\]

hba
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@waterineyes @hartnn Do you have a better way ?

hartnn
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not that, can u find distance between two points ?

waterineyes
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What are you doing man??
Use distance formula..

hba
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Yeah

hartnn
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Distance between points (x1,y1) and (x2,y2) is
\(\huge d=\sqrt{(x_1x_2)^2+(y_1y_2)^2}\)

waterineyes
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\[Distance = \sqrt{(x_2x_1)^2  (y_2y_1)^2}\]

hba
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\[d=\sqrt{(x2x1)^2+(y2y1)^2}\]

hba
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lol

waterineyes
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Written three times but used not atleast once..
ha ha ha..

hartnn
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lol :P

hba
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\[d=8\sqrt{2}\]

hba
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what next ?

hartnn
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radius = d/2

hba
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@hartnn ?

hartnn
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commented

waterineyes
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This you have got is length of Diameter..
You have to find radius so you will half it..

hba
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r=4root(2)

hartnn
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yup... u know what to do from now....

waterineyes
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dw:1353175013593:dw

hba
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(xa)^2+(yb)^2=r^2

waterineyes
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Yep Go Ahead..

hba
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x^2+y^22x+4y27=0

waterineyes
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Yep..

waterineyes
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1 + 4 = 32
implies 27 on LHS..

hba
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Thanks a lot @hartnn and @waterineyes

waterineyes
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You are welcome dear..