Find $k(\neq 0)$ for which the line $x=k$ intersects the curve $xy^2=(x+y)^2$ orthogonally.
The first one is a line. Please help me to solve the problem.
Find $k(\neq 0)$ for which the line $x=k$ intersects the curve $xy^2=(x+y)^2$ orthogonally.
The first one is a line. Please help me to solve the problem.
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