直线l:(2m²+m-3)x+(m²-m)y=m²-1的倾斜角为3π/4,求m
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![直线l:(2m²+m-3)x+(m²-m)y=m²-1的倾斜角为3π/4,求m](/uploads/image/z/4172254-70-4.jpg?t=%E7%9B%B4%E7%BA%BFl%EF%BC%9A%EF%BC%882m%26%23178%3B%EF%BC%8Bm%EF%BC%8D3%EF%BC%89x%EF%BC%8B%EF%BC%88m%26%23178%3B%EF%BC%8Dm%EF%BC%89y%3Dm%26%23178%3B%EF%BC%8D1%E7%9A%84%E5%80%BE%E6%96%9C%E8%A7%92%E4%B8%BA3%CF%80%EF%BC%8F4%2C%E6%B1%82m)
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直线l:(2m²+m-3)x+(m²-m)y=m²-1的倾斜角为3π/4,求m
直线l:(2m²+m-3)x+(m²-m)y=m²-1的倾斜角为3π/4,求m
直线l:(2m²+m-3)x+(m²-m)y=m²-1的倾斜角为3π/4,求m
k=-(2m²+m-3)/(m²-m)=tan3π/4=-1,
∴m^2+2m-3=0
∴m=-3或m=1