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This is a semi linear equation. Try characteristics method.
答案是这样的,应助有字数要求,所以写得罗嗦些 sqrt(x^2-x+1)/sqrt(1+x^2+(-2*y-1)*x) [latex]\sqrt{\dfrac{x^2-x+1}{x^2-(2\,y+1)x+1}}[/latex]，
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This is a semi linear equation. Try characteristics method.
答案是这样的,应助有字数要求,所以写得罗嗦些
sqrt(x^2-x+1)/sqrt(1+x^2+(-2*y-1)*x)
[latex]\sqrt{\dfrac{x^2-x+1}{x^2-(2\,y+1)x+1}}[/latex]，