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A locus question
回复: A locus question do you know this formula :d={Ax+By+C}/root(A^2+b^2) note :{} indicated absolutely value so you can get it easy substitute it into the formula i.e: 3x+4y+25=0 and 3x+4y-15=0- 2gapple
- Post #10
- Forum: Mathematics Advanced
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