设动点坐标为 P(x,y)
则 √[(x-1)²+(y-2)²]=|5x-y-3|/√(5²+1²)
=> (x-1)²+(y-2)²=(5x-y-3)²/26
=> 26x²-52x+26+26y²-104y+104=25x²+y²+9-10xy-30x+6y
=> x²+25y²+10xy-22x-110y+121=0 【肯定是个抛物线,不过是斜的】
设动点坐标为 P(x,y)
则 √[(x-1)²+(y-2)²]=|5x-y-3|/√(5²+1²)
=> (x-1)²+(y-2)²=(5x-y-3)²/26
=> 26x²-52x+26+26y²-104y+104=25x²+y²+9-10xy-30x+6y
=> x²+25y²+10xy-22x-110y+121=0 【肯定是个抛物线,不过是斜的】