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      <title> by Hapis Lubis</title>
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      <pubDate>2014-10-07 14:08:11 UTC</pubDate>
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         <title>Persamaan Garis singgung pada lingkaran dengan Pusat (0,0) jari - jari r melalui titik ( k,l ) pada lingkaran adalah kx + ly = r^2</title>
         <author>user_1412690062</author>
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         <pubDate>2014-10-31 01:19:40 UTC</pubDate>
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         <title>Persamaan garis singgung pada lingkaran dengan pusat ( a, b ) dan jari - jari r melalui titik ( k, l ) pada lingkaran adalah (k-a)(x-a) + (l-b)(y-b)= r^2</title>
         <author>user_1412690062</author>
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         <pubDate>2014-10-31 01:22:03 UTC</pubDate>
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         <title>Persamaan lingkaran berpusat di (0,0) berjari- jari r adalah 

x2 &amp;nbsp;+ y2
= r2



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         <author>user_1412690062</author>
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         <pubDate>2014-10-31 01:25:12 UTC</pubDate>
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         <title>Persamaan lingkaran berpusat di (a,b) berjari-jari r adalah (x-a)^2 + (y-b)^2 = r^2</title>
         <author>user_1412690062</author>
         <link>https://padlet.com/user_1412690062/hapislubis/wish/39307331</link>
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         <pubDate>2014-10-31 01:26:36 UTC</pubDate>
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         <title>2x </title>
         <author>user_1412690062</author>
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         <pubDate>2014-10-31 01:29:43 UTC</pubDate>
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         <title>Pusat lingkaran 2x ^2 + 2y^2 +8x +4y-16 = 0 adalah (-2,-1) sedangkan jari - jarinya adalah V52.Persamaan garis singgung melalui titik (-5,-3) adalah (-5+2)(x+2)+(-3+1)(y+1) = 52 atau -3(x+2) -2(y+1) = 52</title>
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         <pubDate>2014-10-31 01:29:43 UTC</pubDate>
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