已知点A(-2,2),B(-3,-1),在直线y=2x-1上求点P,使PA+PB最小.这是例题,看练习册上解题过程不是很明白,特别是一组方程组.设点A(-2,2)关于直线Y=2x-1的对称点为A'(a,b)解方程组1.a+2+2(b-2)=02.(b+2)/(2)
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![已知点A(-2,2),B(-3,-1),在直线y=2x-1上求点P,使PA+PB最小.这是例题,看练习册上解题过程不是很明白,特别是一组方程组.设点A(-2,2)关于直线Y=2x-1的对称点为A'(a,b)解方程组1.a+2+2(b-2)=02.(b+2)/(2)](/uploads/image/z/8659686-30-6.jpg?t=%E5%B7%B2%E7%9F%A5%E7%82%B9A%EF%BC%88-2%2C2%EF%BC%89%2CB%EF%BC%88-3%2C-1%EF%BC%89%2C%E5%9C%A8%E7%9B%B4%E7%BA%BFy%3D2x-1%E4%B8%8A%E6%B1%82%E7%82%B9P%2C%E4%BD%BFPA%2BPB%E6%9C%80%E5%B0%8F.%E8%BF%99%E6%98%AF%E4%BE%8B%E9%A2%98%2C%E7%9C%8B%E7%BB%83%E4%B9%A0%E5%86%8C%E4%B8%8A%E8%A7%A3%E9%A2%98%E8%BF%87%E7%A8%8B%E4%B8%8D%E6%98%AF%E5%BE%88%E6%98%8E%E7%99%BD%2C%E7%89%B9%E5%88%AB%E6%98%AF%E4%B8%80%E7%BB%84%E6%96%B9%E7%A8%8B%E7%BB%84.%E8%AE%BE%E7%82%B9A%EF%BC%88-2%2C2%EF%BC%89%E5%85%B3%E4%BA%8E%E7%9B%B4%E7%BA%BFY%3D2x-1%E7%9A%84%E5%AF%B9%E7%A7%B0%E7%82%B9%E4%B8%BAA%27%28a%2Cb%29%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%841.a%2B2%2B2%28b-2%29%3D02.%28b%2B2%29%2F%282%29)
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