Question: Show that the tangent lines at x = 1 2 to the conchoid with equation (x 1)2(x2 + y2) = 2x2 are vertical

Show that the tangent lines at x = 1 ± √2 to the conchoid with equation (x − 1)2(x2 + y2) = 2x2 are vertical (Figure 11).

2. -1 -2 1 2 X

2. -1 -2 1 2 X

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