IGCSE/GCSE/O & A Level/IB/University Student Forum
Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: Fenomenoe9 on February 15, 2010, 03:56:09 pm
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Hello can anyone help me in this question please.
Circle C1 has the equation x^2 + y^2 - 2ay=0 where (a) is a positive constant.
a) Find the coordinates of the center and the radius of C1
Answering or just explaning what to do would be appreciated THANKS!
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One mo
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Hello can anyone help me in this question please.
Circle C1 has the equation x^2 + y^2 - 2ay=0 where (a) is a positive constant.
a) Find the coordinates of the center and the radius of C1
Answering or just explaning what to do would be appreciated THANKS!
a)complete the square
y^2-2ay=(y-a)^2-a^2 so equation becomes x^2+(y-a)^2-a^2=0 so x^2+(y-a)^2=a^2
centre is(0,a) radius is a
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oh nice thats what i did thought i had to find a also... THanks for your help astar!!!!!
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By the way was wondering any1 has solomon worksheets>>????? like coordinate geometry worksheet C but i think they cost money right?
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There are some solomon worksheets on fep.
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Here is the link
http://freeexampapers.com/Dndex.php?d=QSBMZXZlbC9NYXRocy9FZGV4Y2VsL0MyL1NvbG9tb24=
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lol yeah these are not the ones i want i want the different ones like specific for example i have the (Coordinate Geometry worksheet C)