3道高一数学题(直线与方程)其实都是某一个地方想不明白,大家只要解答那个点就OK了.1.已知直线L1:2x+ay+6=0,L2:x+(a-1)y+a^2-1=0,若直线L3与L1关于y=x对称,且L3与L2平行,则a的值为这题我主要想不明
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![3道高一数学题(直线与方程)其实都是某一个地方想不明白,大家只要解答那个点就OK了.1.已知直线L1:2x+ay+6=0,L2:x+(a-1)y+a^2-1=0,若直线L3与L1关于y=x对称,且L3与L2平行,则a的值为这题我主要想不明](/uploads/image/z/227212-52-2.jpg?t=3%E9%81%93%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%E9%A2%98%EF%BC%88%E7%9B%B4%E7%BA%BF%E4%B8%8E%E6%96%B9%E7%A8%8B%EF%BC%89%E5%85%B6%E5%AE%9E%E9%83%BD%E6%98%AF%E6%9F%90%E4%B8%80%E4%B8%AA%E5%9C%B0%E6%96%B9%E6%83%B3%E4%B8%8D%E6%98%8E%E7%99%BD%2C%E5%A4%A7%E5%AE%B6%E5%8F%AA%E8%A6%81%E8%A7%A3%E7%AD%94%E9%82%A3%E4%B8%AA%E7%82%B9%E5%B0%B1OK%E4%BA%86.1.%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BFL1%3A2x%2Bay%2B6%3D0%2CL2%3Ax%2B%28a-1%29y%2Ba%5E2-1%3D0%2C%E8%8B%A5%E7%9B%B4%E7%BA%BFL3%E4%B8%8EL1%E5%85%B3%E4%BA%8Ey%3Dx%E5%AF%B9%E7%A7%B0%2C%E4%B8%94L3%E4%B8%8EL2%E5%B9%B3%E8%A1%8C%2C%E5%88%99a%E7%9A%84%E5%80%BC%E4%B8%BA%E8%BF%99%E9%A2%98%E6%88%91%E4%B8%BB%E8%A6%81%E6%83%B3%E4%B8%8D%E6%98%8E)
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