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neoh147

  • 4 years ago

find the locus of point such that its distance from point (3,-3) is always equal to its distance from the straight line y=x-2 Pls show steps

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  1. mathTalk
    • 4 years ago
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    (a,b) be a point on the locus....................... the line is also x-y-2=0 then (3-a)^2 + (-3-b)^2 = ((a-b-2)^2)/2

  2. neoh147
    • 4 years ago
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    sry just nw i went out... left hand side i can understand... but can i know where right hand side come from??

  3. mathTalk
    • 4 years ago
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    http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html

  4. mathTalk
    • 4 years ago
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    point to a line distance

  5. neoh147
    • 4 years ago
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    thx.. i think i get it already...

  6. neoh147
    • 4 years ago
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    ^^

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